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William (Percy) de Percy (1112 - abt. 1175)

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Sir William "Baron Percy" de Percy formerly Percy
Born in Alnwick, Northumberland, Englandmap
Ancestors ancestors
Husband of — married [location unknown]
Husband of — married about [location unknown]
Descendants descendants
Died about in Topcliffe, Yorkshire, Englandmap
Profile last modified | Created 1 Feb 2011
This page has been accessed 2,525 times.

Categories: House of Percy.

European Aristocracy
William (Percy) de Percy is a member of royalty, nobility or aristocracy in the British Isles.
Join: British Isles Royals and Aristocrats 742-1499 Project


Merging Notice

This profile is a work-in-progress. Under the developing rules on historically-significant ancestors over 300-years-old we are doing expedited merges. The final WikiTree ID is Percy-25. Do not merge this profile into any other. Merge duplicates into this profile.


William fought on King Stephen's side at the Battle of the Standard 1138 against the invading Scots under David I; founded Sallay Abbey Jan 1147/8, having presented the Abbey with lands for its upkeep and a site for its physical construction; probably founded also Stainfield Priory, Lincs, and made gifts to Byland and Fountains Abbeys, at the latter of which he was later buried; married 1st Alice or Adelaide de Tonbridge[1] (died between 1148 and c1166), probably daughter of RichardFitzGilbert de (Lord of) Clare by Alice, sister of Ranulph, Earl of Chester; married 2nd c1166, as her 2nd of three husbands, Sibyl de Vaognes (died in or after 1212), widow of Robert de Ros, and dspml by Easter 1175.[2]


  1. Douglas Richardson, Royal Ancestry, Vol. IV, p. 343.
  2. [Burke's Peerage].
  • "Royal Ancestry" 2013, Douglas Richardson Vol. II. p. 174
  • "Royal Ancestry" 2013, Douglas Richardson Vol. IV p. 344-345
  • Collins, Arthur, and Egerton Brydges. "Percy, Duke of Northumberland." Collins's Peerage of England Genealogical, Biographical, and Historical. Vol. II. London: Printed for F.C. and J. Rivington, Otridge and Son ... [et Al., 1812. 217-366. Print.


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No known carriers of William's Y-chromosome or his mother's mitochondrial DNA have taken yDNA or mtDNA tests.

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On 29 Oct 2016 at 21:08 GMT Anonymous (Holland) Carroll wrote:

Sources: "Royal Ancestry" 2013, Douglas Richardson Vol. II. p. 174.

Thank you!

William is 29 degrees from AJ Jacobs, 34 degrees from Carol Keeling, 19 degrees from George Washington and 23 degrees from Queen Elizabeth II Windsor on our single family tree. Login to find your connection.

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