Bishop Hermann Isaac op den Graeff

Herman Op den Graeff was the first historically proven member of the Op den Graeff family. He was born on 26 November 1585 in Aldekerk, Germany. Some believe that Duke John William, Duke of Jülich-Cleves-Berg had a morganatic marriage prior to 1585 with Anna op den Graeff (van de Aldekerk), with whom he had a son, Herman op den Graeff.[2][3]
No substantial evidence of any relation between the Op den Graeff and John William, Duke of Jülich-Cleves-Berg has ever been presented, so most likely that connection is non-existent.

• Bishop Hermann Isaac op den Graeff was born on 26 November 1585 at North Rhine-Westphalia, Germany.
• Occupation: Was a cloth and linen dealer; Called "The Bishop of the Mennonites", Became a burgher 1605 at Kempen, Rheinland, PRUSSIA, Settled 1609 at Krefeld, Rhenish Prussia, GERMANY, Was one of two delegates from Krefeld to Council of Dordrecht.
• Bishop Hermann Isaac op den Graeff died on 27 December 1642 at Krefeld, Krefeld, North Rhine-Westphalia, Germany, at age 57.1
• During the Dutch Golden Age the (de) Graeffs said that they descend from Wolfgang von Graben, who was in Holland in 1483. In the Diploma of Nobility from 1677 loaned to Andries de Graeff it was affirmed that the family De Graeff was formerly called von Graben.
• Herman Isacks op den Graeff, born 26 Nov. 1585 in Aldekerk, Germany, died 27 Dec. 1642, Krefeld, Germany.
• In his second communication, Stackhouse quotes a letter written by one Col. Henry W. Shoemaker (who claims to be an op den Graeff descendent) as stating: "As far as our family tradition is concerned, and it has often appeared in print, the Op den Graeffs and Van Bebbers were Spanish or Portuguese Jews established in Holland since the days of the Spanish occupation."
• Newspaper Article: Researcher tracts the op den Graeff Family from The Daily News (Lebanon, Pennsylvania) on 23 Nov 1988, WedPage 14.

Married

• Married: Grietjen Margariette Pletjes, daughter of Driessen (Abdreas) Pletjes and his wife Alet Gobles Syllys on 16 Aug. 1605, at Kempen, Germany. Greitijen died 17 Jan. 1643 in Krefeld, Germany.

Children

• 1. i. HESTER OP-DEN-GRAEFF, born 1609 in Krefeld, Germany; died 1643 in Krefeld, Germany; married ISAAC VAN-BEBBER; born Abt. 1609 in Krefeld, Germany.
• 2. ii. ABRAHAM HERMANS OP-DEN-GRAEFF, born 1610; died 1656; married EVA VAN-DER-LEYEN; born Abt. 1610.
• 3. iii. CATHARINA TRINKEN OP-DEN-GRAEFF, born 1612 in Krefeld, Germany; died 1658 in Gladbach, Germany.
• 4. 1055 iv. AGNES HILLEKEN OP-DEN-GRAEFF, born 1614 in Krefeld, Germany; died 1691 in Krefeld, Germany; married THEIS PETERS DOORS.
• 5. v. ISAAK HERMANS OP-DEN-GRAEFF 80,81, born 1616 in Europe, Germany, Krefeld; died 1679 in Europe, Germany, Krefeld; married MARGARET PETERS DOORS; born Abt. 1620 in Europe; died 1683 in Pennsylvania.
• 6. vi. DERRICK HERMANS OP-DEN-GRAEFF, born 1621; died 1655.
• 7. vii. ADELHEID ALLETGEN OP-DEN-GRAEFF, born 1623 in Krefeld, Germany; died 1706 in Rheindahlen, Germany; married WILHELM THER-MEER LUCKENS; born Abt. 1623 in Rheindahlen, Germany; died in Rheindahlen, Germany.
• 8. viii. SOPHIA TEIKEN OP-DEN-GRAEFF, born 1628; married EVERT LUCASSEN; born Abt. 1628.
• 9. ix. SUSANNA OP-DEN-GRAEFF, born 1629; died 1714.

Hermann Isaac op den Graeff son of Issac op den Graeff was without a doubt a native of Crefeld. He in the company with his brothers Direk and Abraham and sister Margaretha, came to Pennsylvania, in 1683. Before leaving their native land the brothers purchased 2000 acres of land, from Jacob Telner, to be laid out in Pennsylvania. Dirck Shipman made Hermann op den Graeff his agent in Pennsylvania. Jacob Telner and Dirck Shipman, of Crefeld, had each purchased 5,000 acres of land from William Penn, March 10, 1682 to be laid out in Pennsylvania.

Crefeld

In the early-to-mid-1600s Crefeld was home to a number of our families – the Op den Graeffs, the Tyson/Tiesen/Thiessens, and the Sellens.

Crefeld sits near the Lower Rhine River almost on the Dutch border. Many of the names associated with Crefeld were of Dutch origin although the language spoken and written by our family members was German. During this time, Crefeld was known for two things: its linen weavers and its religious tolerance.

It’s difficult to get a clear picture of what life was like for our relatives in Crefeld at this time. While others around Europe were being persecuted for their Reformed Protestant religious beliefs, the Protestants – being anyone who protested being a member of the Catholic church – and the Mennonites of Crefeld were worshiping freely and in the open.

We do know that the elder Herman Op den Graeff – who stayed in Crefeld – was a wealthy cloth and linen merchant and the Op den Graeff sons were linen weavers of fine cloth, as they brought their skills with them to Germantown when they emigrated.

If you look on a map today, Krefeld is spelled with the letter K and with around 240,000 inhabitants sits between the city of Dusseldorf and the border of the Nederlands. You will also see that two other towns associated with our families, Kleve and Goch, sit between Crefeld and the Dutch border.

The Naturalization Of First Germantown Settlers

March 7, 1691

Thomas Lloyd, Deputy Governor of Pennsylvania, granted naturalization to 62 of the first settlers in Germantown. This made them a subject of the British crown and all freemen.

COPIA NATURALISATIONIS

Francis Daniel Pastorius and of sixty-one persons more.

German Town.

WILLI,IAM PENN, ESQ.

“William Penn, Proprietary of the Province of Pensilvania, &c. By the King and Queen’s authority. To all to whom these Presents shall come. Sends greeting, &c. Whereas, Francis Daniel Pastorius, Jacob Telner, Dirick Isaacs Op de Graef, Herman Isaacs Op de Graef, Tennis Conderts, Abraham Isaacs Op de Graef, Jacob Isaacs, Johannes Cassels, Hewart Papen, Herman Bon, Albertus Brandt, Jacob Schumacher, Wolter Simens, Dirick Keyser, Arnold Cassel, Dirick Keyser, Jr., Jan Lensen, Jan Duplouvys, Peter Schumacher, Peter Schumacher, Jr., Isaac Dilbceck, Jan Doeden, Abraham Tennis, Willm Rittenghuysen, Claes Rittinghuysen, Johannes Custers, Henrich Buchholts, Isaac Jacobs, Matthis Jacobs, Wiggerd Levering, Isaac Schoffer, Clas Tamsen, Hans Milan, Dirick Sellen, Hendrick Sellen, Paul Wolff, Lenart Arens, Arent Klincken, Paul Kastner, Willem Streipers,.Koendradt Backer, Viet Scherkes, Hans Peter Umstad, Anthony Duplouvys, Heinrich Kesselberg, Reinert Tissen, Jan Lucken. Peter Klever, Heinrich Frey, Hans Andrees Kramer,’Jurgen Schumacher, Isack Schumacher, Peter Kurlis, Gerhard Levering, Johannes Bleikers, Herman Op de Trap, Dirick ‘op de Kolck, Cornelis Siverts, Reinier Hermans, Anthony Loof, Andrees Souplis, Jan Williams, High and Low Germans, Inhabitants and owners of land in German Town and in the County of Philadelphia, being foreigners, and so not freemen. according to the acceptation of the law of England, have requested to be made freemen of the said Province, pursuant to the Powers granted by the King’s Letters patent and Act of Union and Naturalization, &s, made in this government. Now, Know Ye. that for the further Incouragement of the Industry and Sobriety of the said Inhabitants and for the better and further Security of their Estates real and personal, to them and their heirs, They, the said Inhabitants. having Solemnly promised upon Record in the County Court of Philadelphia, aforesaid, faith and Allegiance to William and Mary, King, and Queen of England, &c., and fidelity and lawful Obedience to me, according to the King’s Letters patent, aforesaid, I do declare, and by these presents Confirm them the said Inhabitants before named, to be Freemen of this government, and that they shall be accordingly held and reputed in as full and ample manner as any person or persons residing therein. And that they, the said Freemen, have liberty and freedom hereby to trade and traffick in this Colony or in any of the King’s Dominions and Plantations, as other good subjects may lawfully do without any manner of Lett,.Hinderance or Molestation Whatsoever. Witness: Thomas LLoyd, Deputy Govern’r of the Province of Pensilvania, &c., given at Philadelphia, aforesaid, with the assent of the Provincial Council, the Seventh day of the third-month, Anno Domi, 1691, and in the third year of the reign of King William and Queen Mary over England, &c.”

The document was recorded in the Rolls Office in Philadelphia on the “thirtieth day of the third-month”, that would be March 30th, 1691.

A number of our relatives, both direct and indirect, are included in this document.

• * * * *

Reference: This document was found online at the Rittenhouse Genealogy site.

Op Den Graeff Family History

Op den Graeff, also Updegraff, Updegrave, Updegrove, Uptegrove, was a Germano-Dutch and American family. Pictured in the coat of arms is the Lohengrin Swan. The earliest Op den Graeffs lived in Aldekerk (Kleve), near the border to the Netherlands. An old family history said that the family sprang out from the Von Graben.(1) This was first published in the work Germania topo-chrono-stemmatographica sacra et profana (or Genealogica Germaniae Notitia). These are works of Gabriel Bucelin (or Buccelini, Bincelint), which were published in 1652/62. DeGraeff was formerly the VonGROBER/GROBEN family. this family today shows the same coat-of-arms as the DeGraeff's. During the 17th century the Op den Graeffs were a family of linen weavers in Krefeld and continued this occupation later in Germantown, although the family purchased jointly 2,000 acres of land in Germantown. The Op den Graeff family were said to be tall and spare (thin) in physique and have strongly marked features. The founder of the Opdengraeff line, Herman, was a wealthy weaver and merchant and a Mennonite leader and bishop, one of the signers of the 1632 Mennonite Confession of Faith. He appears to have been an extreme mystic with more than a touch of egomania. Both he and his wife were born to Mennonite families as yet few in number in a group of villages on the border between Germany and Holland, these families were closely interrelated. Oddly for a prosperous and religiously ascetic merchant's family able to put stained glass windows in their house which stood for a very long time. This house contained notorious stained glass windows full of hymns (partly to himself) and mystical religious symbolism, some of it Catholic. A window from his house, now in the Krefeld Museum, says in German "To be God-fearing, devout and of good morals; zealous, hospitable and truthful in speech--is Christian, and pleases the Lord; brings favor, and sets many a one to great honor. Herman op Den Graff und greitgen lein hoffrow. A 1630."(2, 3) devout and good to all sides.” Almost half of his eighteen children did not live long enough to see age two; most of those who died did not live to see age one. Herman and his wife moved to Krefeld in 1609. Herman was one of two delegates of the Krefeld Mennonite Church to sign the Dordrecht Confession in 1632 and served as preacher in the congregation at Krefeld. A certain Reformed member in the Morses Synod bitterly complained that "some simple non-Mennonites felt themselves drawn". In 1637, contributions were requested for the oppressed Reformed Church in Sweebrucke, Herman contributed from his own means in the name of the small Krefeld congregation 25 Reich Thanker, while the Reformed Congregation in Krefeld contributed only 22. From the vast forest of Genealogyland, there is new evidence that Hermen Op Den Graff (1585 - 1642), the celebrated Bishop of the Krefeld Mennonites and a Signer of the Dordrecht Confession of 1632, was a Morganatic (or natural son) of John William De La Marck (1562 - 1609), the Graeff Von Alten (Count of Altena). This particular John William De La Marck is listed as the younger son and heir of William V of Cleves (1516 - 1592) and Mary of Habsburg (1530 - 1584), who was the Princess Imperial, Princess of the Romans and Duchess of Cleves, daughter of the Holy Roman Emperor, Ferdinand I of Habsburg (1503 - 1564), niece of Charles V of Habsburg (1500 - 1558), the Holy Roman Emperor who presided over the sufferings of the Reformation. This paragraph’s genealogy of the op den Graeffs stems from the Scheuten Manuscripts, a private Scheuten family history allegedly written by Adam Scheuten (1639-1668) or his son [sic] Abraham Scheuten (1707-1789), though the actual authorship appears unknown. This history exists in several versions without any documentation or sources named to support the genealogy. There is the suspicion that this manuscript was contrived to invent a royal ancestry for the op den Graeff family. It was before 1609 when the armistice between the Netherlands and Spain took place, when the Mennonite family op den Graefff left Kempen and Aldekerk (Lower Rhine) and settled at Krefeld, where they were tolerated under the reign of Prince Moritz of Orange. Alderkerk, GE (about 12 miles from Krefeld). Krefeld, GE (a small town of handicraftmen). Herman was a Linen weaver and merchant. He was born at Aldekirk/Allekirche some 12 miles from Krefeld. He was a burgher of Kempen in 1605 where he married. He moved to Krefeld by about 1608. He is the first Mennonite preacher known by name. He was the father of eighteen children.(4) In Krefeld the family belong to the Mennonite circle, which turned Quaker in part ca. 1679-1680. In the end of the 17th century some of the Op den Graeff’s descendants migrated to the United States. The 13 counted families that boarded the Concord departed from London on July 24, 1683, and arrived safely in Philadelphia on October 6 1683 and are among the passengers listed below. They are among the thirteen families (Original 13) often referred to as the Germantown, Philadelphia, Pennsylvania Founders, who arrived on the ship Concord on October 6, 1683.(5, 6, 7) One of these was famous Abraham op den Graeff, a cousin of William Penn, who signed along with three others the first organized religious petition against slavery in the colonies, the 1688 Germantown Quaker Petition Against Slavery.(8) In 1681, William Penn had been granted land in America from the King of England*(9), and began a search for candidates to inhabit his new world. Penn was looking for righteous, pious, God-fearing men and their families to fulfill his dream of a land where people were free to worship without fear of retribution. This noble project was referred to by Penn as his "Holy Experiment". He encountered the German people in the lower Rhine Valley, who were in need of relief from oppression, hostility, and religious persecution, and found they filled his requirements for religious, moral, and economic status perfectly. As a result, 13 families from the lower Rhine region were invited by William Penn to come to the new land of opportunity, to be a part of the creation of a new type of world... at last, freedom of worship... in Philadelphia, Pennsylvania. These are the families who we now refer to as "The Original 13". The Original 13 "Krefelders", who set sail in July 1683 and arrived in Philadelphia, Pennsylvania in October, 1683 on the Concord(10), are considered to be the first "group" or mass-emigration to America. They were also the original settlers of Germantown, Pennsylvania. Three Op Den Graeff brothers were in this group, i.e. Herman, Derik and Abraham.(11) The Founding of Germantown The Concord landed in Philadelphia on October 6, 1683, a mere seven weeks after setting sail from the town of Crefeld (pronounced approximately Kray-feld) in the lower Rhine River valley of Germany. Would this little group of thirty-three persons from twelve families really initiate a revolution in the New World? Their ship’s name was prophetic: Concord is derived from the 17th century Latin motto of the Netherlands, which translates, “Concord makes small things flourish.” The Voyage on the Concord The Concord was a wooden vessel 130 feet long and 32 feet wide. She carried 180 passengers, thirty to forty sailors, and twenty-six cannon. Captain Jeffries had sailed to America seven or eight times, and was friendly and polite. The weather was calm on the voyage. Our passengers were all from the town of Crefeld, weavers by occupation. Today’s, Krefeld is a major German industrial center noted for its steel, chemical and textile plants, and has some 235,000 inhabitants. When the Concord landed, Pennsylvania’s Proprietor, William Penn. was on hand to greet the new colonists. Not long thereafter, they were also welcomed by Francis Pastorius, who helped them to settle in this new land. He worked with Penn to secure the property that Penn had promised to Krefelders and Quakers. Pastorius negotiated for the settlers with William Penn for the location of the German land grant. The immigrants had wanted to buy land in a flat location along a navigable stream for easy transport. But such a location was not suitable because nearby land (like today’s Manayunk and Roxborough) was too hilly for farming. Many of the 13 families spent their first winter in the New World in hastily constructed homes in caves on the banks of the Delaware River. They roofed these crude cavities over with boards from nearby trees to provide protection against the cold and snow. The Original Krefelder Families Who were these immigrants? Were they really Quakers? Mt. Airy scholar J.M. Duffin tells us that the Krefelders were German-speaking and originally Dutch-speaking Germans Quakers. Their settlement here in Mt. Airy and Germantown was part of a struggle for human freedom not witnessed before. They wanted to create a new community based on their individual worth and responsibility. They sought to rule themselves here in Germantown. They wanted a little country of their own where they could worship in German without fear. Unlike Pastorius, these people were not wealthy, but were skilled craftsmen who knew they would have to work hard to survive. By trade, they were carpenters, weavers, dyers, tailors and shoemakers. During the first year, they had to clear land and plant crops for food and flax for weaving. Fifty ships had landed in Philadelphia by 1683. By 1689, Germantown was a thriving little community of 44 families, built on the original 13 Krefelder families.(12) Abraham op den Graeffs descendants named Opdegraf(f), Updegraf(f), Uptagraff(t), Updegrave, Updegrove, Updegraph and Upthegrove. Pennsylvania Governor Samuel Whitaker Pennypacker was the fourth great-grandson of Abraham.(13) Some of their descendants continued in or returned to the Mennonite faith and were found in the Montgomery County congregations of Skippack and Boyertown until modern times. During the earlier 19th century David Benjamin Updegraff of the Updegraff branch of the family was a conductor (one of the leaders) of the Underground Railroad. He was one of the first outspoken anti-slavery men, and voted with the first liberty party from conscientious convictions. His house was the home of antislavery advocates and temperance lecturers also a station on the Underground Railroad. Another alleged part of the family settled in the area of Bad Kreuznach, Rhineland-Palatinate, Germany(14). The family still live until now. The Father of Herman is often given (WITHOUT PROOF) as Abraham op den Graf, with family lineages as follows: 1) FREDERIKUS DE GROBEN, m. 1359 CATHARINE DE SOMMEROCK 2) LEONARDUS DE GROBEN, m. 1441 MARIA DE NORTHEIN 3) Ernetus DE GROBEN (d. 1510), m. 1508 Margarethe DE RITSCHES 3) Virgilina DE GROBEN (1467 - 1507) 3) WOLFGANGUS DE GROBEN 4) Pieter OP DEN GRAEFF (aft 1483 - ), m. Grietz Pietrazs BERENTS 4) ABRAHAM OP DEN GRAF (1490 - 1561 Dusseldorf, Germany) Cf. Donna N. Basinger, Clymer Connections, RootsWeb's WorldConnect Project, 22 May 2000. Cf. June (Shaull) Lutz 1988, History of the Op den Graef/Updegraff Family, pp. U-1/U-2. From a 17th century document. Unproven as father of Herman op den Graeff. Abraham was a Protestant reformer (1561) of Zwammerdam, Holland, whose lands were seized by the Catholic church. He and his family escaped to Antwerp, but persecution of Protestants drove them to Germany. After his death his widow moved to Krefeld.(15) Alternatively: Two painted glass windows(16), circa 1630, from the home of Herman op den Graeff are preserved in the Kaiser Wilhelm Museum in Krefeld. G. W. Miller 1991, "Reconstructing the Op Den Graff windows of 1630 A.D. to fit the Lohengrin Genealogy of the House of Cleves," Krefeld Immigrants and Their Descendants, vol. 8, #1, pp. 9-28. Interpretation of heraldic symbols on the op den Graff windows implies that Herman op den Graeff was the son of John William de la Marck, Count of Altena, and a woman not of the nobility. The morganatic mother of Herman has been TENTATIVELY identified as Anna Van Aldekerk (Dutch) or Anne de Aldekerk (French) or Anna Cloister of Aldekerk, perhaps a former nun. In the context of royalty, a morganatic marriage is a marriage between people of unequal social rank, which prevents the passage of the husband's titles and privileges to the wife and any children born of the marriage.

sources: (1) Family Tree (2) Family Motto, op Herman op den Graeff and his wife Greitgen (Greitje) Pletjes: God is fruitful, devout and good to all sides. By Unknown - Kaiser-Wilhelm Museum, Krefeld, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8017390 (3) Translated from the German and appearing in Wild Rhododendrons, http://wildrohodes.blogspot.com (4) Letter, Dorothea Schweiger (file); Krefeld Imm V 4 #1 pg 10; Op Den Graeff, v 1 LKS film 1036920 #3; Pennsylvania Folk Life V3 #8, paragraphs 4-7 (5) "The Friend, Volume 48", The Friend., 1875. Harvard University. p. 67 (6) "Ship Passengers Mentioned in Merion MM Minutes; Chester County, PA.", Yvonne Prough. U.S. Genealogical Web Archives. Accessed 29 sept 2011 (7) "1683 Concord", Pro Genealogists. Accessed 29 sept 2011 (8) Family Motto, op Herman op den Graeff and his wife Greitgen (Greitje) Pletjes: God is fruitful, devout and good to all sides. By Unknown - Kaiser-Wilhelm Museum, Krefeld, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8017390 (9) William Penn’s 1681 Pamphlet, The Original 13, Settlers of Germantown Pennsylvania, ancestry.com (10) The Concord, 1683, Concord artwork by German American Artist Richard Schlect, 1982, Courtesy Postmaster General’s Collection, USPS, Smithsonian National Postal Museum, https://postalmuseum.si.edu/collections/object-spotlight/germany-us... (11) The Original 13, Settlers of Germantown, Pennsylvania. rootsweb, ancestry.com; The Original 13, Settlers of Germantown, Pennsylvania (12) The Founding of Germantown, Pastorius and the Founding of Germantown, http://www.wman.net/pastorius-and-the-founding-of-germantown (13) “Colonial and Revolutionary Families of Pennsylvania” John W. Jordan. Genealogical Publishing Com, 1978. ISBN 0-8063-0811-7, 9780806308111. p. 486 (14) Op den Graeff family, History, https://en.wikipedia.org/wiki/Op_den_Graeff_family (15) Letter, Dorothea Schweiger (file); Krefeld Imm V 4 #1 pg 10; Op Den Graeff, v 1 LKS film 1036920 #3; Pennsylvania Folk Life V3 #8, paragraphs 4-7., http://genealogy.com (16) Op_den_Graeff_Krefeld_Stained-Glass_Windows_V, with swan and coat of arms, By unknown author - Kaiser-Wilhelm Museum, Krefeld Kaiser-Wilhelm Museum, Krefeld Nancy Dellinger: The Legend of the Lohengrin Swan http://www.creativealternatives.net/geneal/opdengraff/, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=47165579 sources for stained glass pictures shown in 'photos' (1) Op_den_Graeff_Krefeld_Stained-Glass_Windows _VII, marriage By Unknown - Kaiser-Wilhelm Museum, Krefeld Nancy Dellinger: The Legend of the Lohengrin Swan http://www.creativealternatives.net/geneal/opdengraff/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8017340 (2) Herman op den Graeff’s coat of arms at the stained window of Krefeld, Op_den_Graeff_Krefeld_Stained-Glass_Windows_I, with the coat of arms from Hermann op den Graeff, showing “Lohengrin Swan” of the Arms of Cleves, By Unknown - Kaiser-Wilhelm Museum, Krefeld Nancy Dellinger: The Legend of the Lohengrin Swan http://www.creativealternatives.net/geneal/opdengraff/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8017340

Links

• http://our-royal-titled-noble-and-commoner-ancestors.com/p5995.htm#...
• https://www.revolvy.com/page/John-William%2C-Duke-of-Jülich%252DCleves%252DBerg
• https://www.revolvy.com/page/Op-den-Graeff-family
• https://gameo.org/index.php?title=Graeff,_op_den_(Opdegraf,_Updegra...
• https://www.geni.com/documents/view?doc_id=6000000068348070080&
• https://www.geni.com/documents/view?doc_id=6000000068348125032&
• https://www.geni.com/documents/view?doc_id=6000000068348267163&
• https://www.geni.com/documents/view?doc_id=6000000068348365020&
• https://www.geni.com/documents/view?doc_id=6000000068348647848&
• https://www.geni.com/documents/view?doc_id=6000000068348613902&
• https://www.familienverbandgraeff.at/historie/graeffsche-ahnenbilder/
• http://en.wikipedia.org/wiki/Herman_op_den_Graeff
• https://degraeff.jimdo.com/biografien-des-zweiges-op-den-graeff/
• https://en.m.wikipedia.org/wiki/John_William,_Duke_of_Jülich-Cleves-Berg
• http://www.creativealternatives.net/geneal/opdengraff/
• https://degraeff.jimdo.com/biografien-des-zweiges-op-den-graeff/
• https://www.familienverbandgraeff.at/english-version/history-of-the...äff-in-germany/
• http://home.earthlink.net/~dougmcintosh/Pages/Desc%20of%20Ferd%20Ha...
• http://family.kimba.com/2011/11/26/herman-op-den-graeff/
• http://en.wikipedia.org/wiki/List_of_participants_in_the_Synod_of_Dort
• http://www.ournetwork.net/complete/May-June/p740.htm#i50129
• http://freepages.rootsweb.com/~bloganfp/genealogy/v02n03.html

Sources

• William Penn and the Dutch Quaker Migration to Pennsylvania, By Prof. William I. Hull - https://books.google.com/books?id=ab9sDwAAQBAJ&pg=PT344&lpg=PT344&d...
• Our Family Ancestors - Thomas Maxwell Potts (1895) pages Images 81-86 - https://www.geni.com/photo/view/6000000000140095350?album_type=photos_of_me&photo_id=6000000085824879880
• Herman Op De graeffin the U.S. and International Marriage Records, 1560-1900 - Name: Herman Op Degraeff Gender: Male Birth Place: Aldekerk, Herzogtum Kleve, Heiliges Römisches Reich Deutscher Nation, Birth Year: 1585 Spouse Name: Grietie Pleties,Spouse Birth Year:1587, Number Pages: 1 - https://www.geni.com/photo/view/6000000000140095350?album_type=photos_of_me&photo_id=6000000021663726739&position=5
• The Friend, Volume 48", The Friend., 1875. Harvard University. p. 67
• "Ship Passengers Mentioned in Merion MM Minutes; Chester County, PA." Archived 2012-04-21 at the Wayback Machine., Yvonne Prough. U.S. Genealogical Web Archives. Accessed 29 sept 2011
• 1683 Concord" Archived 2013-05-21 at the Wayback Machine., Pro Genealogists. Accessed 29 sept 2011
• Colonial and Revolutionary Families of Pennsylvania", John W. Jordan. Genealogical Publishing Com, 1978. ISBN 0-8063-0811-7, 9780806308111. p. 486
• History of the Op Den Graeff/Updegraff family", June Shaull Lutz, 1988, S. 1
• Mennonite World Review - More than our family tree
• Op den Graeff Krefeld Stained-Glass Windows,
• Google Bücher: Germania Topo-Chrono-Stemmato-Graphica Sacra Et Profana, von Gacriel Bucelin, Ulm 1655
• Bender, Harold S. (1957) Graeff, op den (Opdegraf, Updegrave, Updegrove) family. Global Anabaptist Mennonite
• Encyclopedia Online. Global Anabaptist Mennonite Encyclopedia Online, Ulle, R.F. (1983) The Original Germantown Families. Mennonite Family History April.
• OpDeGraff Genealogy narrative from the records of Wilson Alexander Myers - https://www.geni.com/photo/view/6000000000140095350?album_type=photos_of_me&photo_id=6000000085825888912&position=0
• Poem op Herman op den Graeff and his wife Greitgen (Greitje) Pletjes: God is fruitful, devout and good to all sides - https://www.geni.com/photo/view/6000000000140095350?album_type=photos_of_me&photo_id=6000000041319440510&position=2
• HULL, WILLIAM I. William Penn and the Dutch Quaker Migration to Pennsylvania. (Swarthmore College Monographs on Quaker History, 2.) Swarthmore, PA: Swarthmore College, 1935, pp. 395-421. Reprinted by Genealogical Publishing Co., Baltimore, 1970.