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William de Percy was born circa 1112 in Alnwick to Alan de Percy and Emma de Gaunt (c1071-bef1135) and died before 1175 Topcliffe of unspecified causes. He married Alice de Clare (c1115-aft1148) 1136 JL . He married Sibyl de Valoines . Alfred the Great (849-899)/s, Charlemagne (747-814)/s.



Children



Offspring of William de Percy and Alice de Clare (c1115-aft1148)
Name Birth Death Joined with
Richard de Percy
Walter de Percy
William de Percy
Emma de Percy
Agnes de Percy (-1203) 9999 Alnwick 1203 Jocelin de Louvain (c1126-1180)
Matilda de Percy
Alan de Percy
Alice de Percy










Residences

Footnotes (including sources)

‡ General
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