Sir William de Ros, Baron Ingmanthorpe

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William de Ros

Also Known As: "3rd Baron Of Helmsley", "ross", "Sir William de Roos of Helmsley"
Birthdate: (68)
Birthplace: North York Moors National Park, Helmsley, North Yorkshire, United Kingdom
Death: circa May 28, 1310 (60-76)
North York Moors National Park, Helmsley, North Yorkshire, United Kingdom
Place of Burial: York, Yorkshire, England, United Kingdom
Immediate Family:

Son of Sir William de Ros and Lucy FitzPiers, Baroness de Ros
Husband of Eustace de Ros (FitzHugh)
Father of Sir Robert De Ros, Sr.; Lucy/Lucia de Plumpton; Isabel de Ros; Alice De Ros; Ivetta Juetta de Ros and 2 others
Brother of Alicia de Ros, of Helmsley; Robert de Ros; Robert de Ros, Lord of Belvoir; Lucy de Ros; Alexander de Ros and 4 others

Occupation: Earl of Ross
Managed by: Private User
Last Updated:

About Sir William de Ros, Baron Ingmanthorpe

William was one of the twelve competitors for the Scottish crown following the death of the Maid of Norway (grand-daughter of King David I). His claim was made since his grandmother was the eldest illegitimate daughter of William I the Lion.

William's arms are Gules three water bougets Argent.

Family Sheet


Name: William De RosMale Note Born: Abt 12351235-1-1 at Ingmanthorpe, Yorkshire, EnglandIngmanthorpe, Yorkshire, England Married: Bef 12681268-1-1 Died:

      Father: William De Ros
      Mother: Lucy Fitzpiers


Name: Eustace Fitzhugh Note

        Born: Abt 1244 at Ingmanthorpe, Yorkshire, England

Other Spouses: Nicholas Cauntelo

      Father: Ralph Fitzhugh
      Mother: Agnes Greasley


Name: Lucy De Ros

     Husband: Robert Plumpton

Name: Lucia Ros

        Born: Abt 1270 at Ingmanthorpe, Yorkshire, England
     Husband: Robert Plumpton

Name: Margaret Ros

        Born: Abt 1272 at Ingmanthorpe, Yorkshire, England

Name: Mary Ros

        Born: Abt 1274 at Ingmanthorpe, Yorkshire, England
        Died: 1310

Name: Thomas Ros

        Born: Abt 1276 at Dowsby, Lincolnshire, England


1). GEC The Complete Peerage Vol 11 p. 117, 118 GS9 4 2 D 2 4 C Burke sPeerage & Baronetage p. 416 57ed,4 2 D 2 2b M ag na Charta p. 123 Vol 1 2 942 D22w Weis A nces tra l Root s o f Sixty Colonists 972 D2Sw Weis Cros s Inde x o f Anc Ro ot s of Sixty Col p. 277 GS 974 D2wa Rev C.E . Ad amsen, Ar cha elogica Aeliana Vol 16 ns p. 1 74 De Ro s Pe d GS 942.8 2 B2a Jos Foster Vol 1 pt 3Pe d of York s Fam , Plumpton P ed Q94 2,74 D2f Hist of Nrthu m p. 37 Vo l II , GS 942,82 H2 his. A rchive Record SLC , UT

2). She is sealed to her firsr husband Nicholas de Cauntelo.

Place of Burial: Church Of Gray Friars, , Yorkshire, England

"Of Ingmanthorpe" ---------------------------------------------------------------------------------------------------------------------------------------- Pages 169 - 170 IV._William, fourth earl. The Earls of Ross, Athole, Moray, and others, were witnesses to the confirmation by King Robert I. of Scotland, and Haquin, King of Norway, at Inverness, 28th October 1312, of a treaty between Alexander III. of Scotland and Magnus IV. of Norway, 6th July 1266, whereby Magnus renounced for ever the Isles of Sodor and Man, and all the Western Isles, for an annual rent of one hundred merks sterling, and the sum of four thousand merks to be paid by instalments; reserving, however, to himself the Isles of Orkney and Shetland. William, Earl of Ross, is also one of the witnesses to a charter whereby Robert I. granted the lands of Taruays, or Tarves, in Aberdeenshire, to the Abbey of Arbroath, 26th February 1313. He got a charter from Robert I. of the lands of Dingwall, with the castle, burgh, and liberties of the same, and other lands, in 1321; also another charter, dated 5th August 1322, witnessed by Donald, Abbot of New Fearn. He appeared in the convention of Brigham, 12th March 1289, when the marriage of Queen Margaret with Prince Edward of England was proposed. He was one of the nominees on the part of Baliol in his competition for the crown of Scotland with Robert Bruce, 1292. He swore fealty to Edward I. at Berwick, 3d August 1292, and was present when John Baliol did homage to the English king, 20th November 1292. He was directed to attend Edward at London, 1st September 1294, to go over the seas with the king, by letters dated 29th June 1294. He was in the Scottish army at the battle of Dunbar, 28th April 1296, and, after the defeat of the Scots, he took refuge in the castle of Dunbar, which was surrendered a day or two afterwards, and he was carried prisoner to London. He adhered to Edward II., who, 20th May 1308, addressed a letter to him and his son Hugh, thanking them for past services and requiring their aid. Afterwards he joined the party of Robert Bruce, and was one of the guarantees of a treaty between him and Edward II., 1st June 1323. He was one of the nobles who signed the letter addressed to Pope John XXII. in 1320, asserting the independence of Scotland.

William, fourth Earl of Ross, had three children - I. Hugh, who succeeded him. II. John, who married Margaret Cumyn, second daughter of Alexander, fourth Earl of Buchan, and got with her as tocher half of the Earl of Buchan's lands in Scotland; and Robert I., in 1315, confirmed a charter granting to them these lands. III. Lady Isabella, married to Edward Bruce, Earl of Carrick, for which marriage a papal dispensation was obtained, 1st June 1317.

William, fourth Earl of Ross, died before 3d July 1328, and was succeeded by his eldest son

Sir William, 3rd son, served in Scotland, 1257-58, and in Gascony, 1294. He m. 1268 Eustache, widow of Sir Nicholas de Cauntelo and daughter and heir of Ralph Fitz Hugh (son of Hugh Fitz Ralph by Agnes, dau. and heir of Ralph de Gresley.); their daughter Lucia (Lucy) m. Sir Robert Plumpton of Plumpton, Knight, flourished 1307, d. 1325, of an ancient family settled in Yorkshire since The Conquest of 1066.

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Sir William de Ros, Baron Ingmanthorpe's Timeline

Helmsley, North Yorkshire, United Kingdom
Age 23
Kendall Castle, Ingmanthorpe, Westmoreland, England
Age 28
Plumpton, Yorkshire, England
Age 34
Hamlake Castle, Yorkshire, England
Age 42
Ross, Ross and Cromarty, Scotland
Age 44
Ross, Ross and Cromarty, Scotland
Age 48
Yorkshire, England
May 28, 1310
Age 68
Helmsley, North Yorkshire, United Kingdom
February 15, 1967
Age 68