"Margaret Beaufort (Br [ˈbɛʊfɨt]), Countess of Richmond and Derby (31 May 1443 or 1441 – 29 June 1509) was the mother of King Henry VII and paternal grandmother of King Henry VIII of England. She was a key figure in the Wars of the Roses and an influential matriarch of the House of Tudor. She founded two Cambridge colleges. In 1509, she briefly served as regent of England for her grandson."

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Links:

http://en.wikipedia.org/wiki/Lady_Margaret_Beaufort

http://www.englishmonarchs.co.uk/tudor_12.htm

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=20906

http://www.geneall.net/U/per_page.php?id=2036

http://histfam.familysearch.org/getperson.php?personID=I292&tree=EuropeRoyalNobleHous

http://histfam.familysearch.org/getperson.php?personID=I2889&tree=Nixon

http://histfam.familysearch.org/getperson.php?personID=I1770&tree=PagetHeraldicBaronag

http://histfam.familysearch.org/getperson.php?personID=I66650&tree=Welsh

http://www.luminarium.org/encyclopedia/margaretbeaufort.htm

http://www.thepeerage.com/p10190.htm#i101897

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Citations / Sources:

[S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume II, page 45. Hereinafter cited as The Complete Peerage.

[S3409] Caroline Maubois, "re: Penancoet Family," e-mail message to Darryl Roger Lundy, 2 December 2008. Hereinafter cited as "re: Penancoet Family."

[S11] Alison Weir, Britain's Royal Family: A Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 148. Hereinafter cited as Britain's Royal Family. [S8] Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 220. Hereinafter cited as Burke's Peerage and Baronetage, 106th edition.

[S8] Charles Mosley, Burke's Peerage and Baronetage, 106th edition, volume 1, page 220, says 29 June 1504.

[S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 1101. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.

[S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995), reference: "Beaufort, Margaret". Hereinafter cited as Dictionary of National Biography.

[S2436] #4569 Welsh Genealogies AD 1400-1500 (1983), Bartrum, Peter C. (Peter Clement), (18 volumes, with supplements containing additions and corrections. Aberystwyth: National Library of Wales, 1983), FHL book 942.9 D2bw., vol. 8 p. 1284; vol. 9 p. 1567.

[S712] #1039 Pedigrees of Anglesey and Carnarvonshire Families: with Their Collateral Branches in Denbighshire, Merionethshire (1914), Griffith, John Edwards, (Horncastle, England: W.K. Morton, 1914), FHL book Folio 942.9 D2gr; FHL microfilm 468,334., p. I, 106, 158, 223.

[S1800] #771 The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, Cedewen and Meirionydd (1881-1887), Lloyd, Jacob Youde William, (6 volumes. London: T. Richards, 1881-1887), FHL book 942.9 D2L; FHL microfilms 990,213-990,214., vol. 2 p. 135; vol. 4 p. 283.

[S2434] #2105 Heraldic Visitations of Wales and Part of the Marches Between the Years 1586 and 1613 by Lewys Dwnn (1846), Dwnn, Lewys; transcribed and edited with notes by Sir Samuel Rush Meyrick, (2 volumes. Llandovery: William Rees, 1846), FHL book 942.9 D23d; FHL microfilm 176,668., vol. 2 p. 88 fn. 1, 108.

[S2411] #11915 British Genealogy (filmed 1950), Evans, Alcwyn Caryni, (Books A to H. National Library of Wales MSS 12359-12360D. Manuscript filmed by the Genealogical Society of Utah, 1950), FHL microfilms 104,355 and 104,390 item 2., book 6 p. F4*, 5; book 8 p. H45.

[S673] #1079 A History of Monmouthshire from the Coming of the Normans into Wales down to the Present Time (1904-1993), Bradney, Sir Joseph Alfred, (Publications of the South Wales Record Society, number 8. Five volumes in 13. London: Mitchell, Hughes and Clarke, 1904-1993), FHL book 942.43 H2b., vol. 2 p. 26*.

[S2318] #1210 The Family of Griffith of Garn and Plasnewydd in the County of Denbigh, as Registered in the College of Arms from the Beginning of the XIth Century (1934), Glenn, Thomas Allen, (London: Harrison, 1934), FHL book 929.2429 G875g; FHL microfilm 994,040 ite., p. 212.

[S2436] #4569 Welsh Genealogies AD 1400-1500 (1983), Bartrum, Peter C. (Peter Clement), (18 volumes, with supplements containing additions and corrections. Aberystwyth: National Library of Wales, 1983), FHL book 942.9 D2bw., vol. 9 p. 1567.

[S2434] #2105 Heraldic Visitations of Wales and Part of the Marches Between the Years 1586 and 1613 by Lewys Dwnn (1846), Dwnn, Lewys; transcribed and edited with notes by Sir Samuel Rush Meyrick, (2 volumes. Llandovery: William Rees, 1846), FHL book 942.9 D23d; FHL microfilm 176,668., vol. 2 p. 108.

[S712] #1039 Pedigrees of Anglesey and Carnarvonshire Families: with Their Collateral Branches in Denbighshire, Merionethshire (1914), Griffith, John Edwards, (Horncastle, England: W.K. Morton, 1914), FHL book Folio 942.9 D2gr; FHL microfilm 468,334., p. 106.

[S338] Plantagenet Ancestry: A Study in Colonial and Medieval Families (2004), Richardson, Douglas, edited by Kamball G. Everingham, (Baltimore: Genealogical Publishing Company, 2004), FHL book 942 D5rd., p. xxix.

[S2] Paget Heraldic Baronage, Paget, Gerald, (Manuscript, filmed by the Genealogical Society of Utah, 1957), chart no. 45 Beachamp of Bletsoe, chart no. 47 Beaufort, FHL microfilm 170063.

[S452] #21 The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (1910), Cokayne, George Edward (main author) and Vicary Gibbs (added author), (New edition. 13 volumes in 14. London: St. Catherine Press,1910-), vol. 2 p. 45 fn. (c), 206; vol. 3 p. 294 fn. (d); vol. 4 p. 207.

[S452] #21 The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (1910), Cokayne, George Edward (main author) and Vicary Gibbs (added author), (New edition. 13 volumes in 14. London: St. Catherine Press,1910-), vol. 14 p. 251 [DERBY].