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Family:
Bibliography
  1. Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 10, Oakham-Richmond. London: St Catherine Press, 1945. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP X [Ap][p0-9].*].
  2. Keats-Rohan, K.S.B., Domesday Descendants, A Prosopography of Persons Occurring in English Documents 1066-1166. Vol II: Pipe Rolls to Cartae Baronum. Bury St Edmunds, Suffolk: Boydell Press, 2002. NYPL ARF 03-4178 vol 2. Corrections at http://users.ox.ac.uk/~prosop/domesday-descendants-corrigenda.pdf Information from this source tagged as [Ref: Keats-Rohan DD p[0-9]*].
  3. Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v4p[0-9]*].

Sources for birth and parent Information
father:
illeg son [Ref: CP X p439(e), Keats-Rohan DD p629, Richardson RoyalAnc v4p344]
Research Notes:
Knt [Ref: Richardson RoyalAnc v4p344]

took service under David, King of Scotland [Ref: CP X p439(e)]

present at the Battle of the Standard, being described as "Alanus de Perci magni Alani filius nothus, miles sirenuissimus et in militaribus negotiis probatissimus" [Ref: CP X p439(e)]

gave to Whitby a carucate in Oxnan and another in Heton, both co Roxburgh, witnessed by William and Henry de Percy his brothers, and confirmed by Geoffrey his brother [Ref: CP X p439(e)]

described as "le Meschin" in the memorial of benefactions to Whitby [Ref: CP X p439(e)]

likely the Alan de Percy who witnessed an inquisition of Earl David before he became King [Ref: CP X p439(e)]



Pedigree of Sir Alan De PERCY
                   /-----(Unk) De PERCY
          /-----William Algernon De PERCY, Baron Of Topcliffe
 /-----Alan De PERCY, Baron Of Topcliffe
|        |                  /-----(Unk) De PORT
|        |         /-----Hugh De PORT, Baron Of Basing
|         \-----Emma De PORT
|                  \-----Orence
Sir Alan De PERCY



Descendants of Sir Alan De PERCY
1. Sir Alan De PERCY