Nielsen Hayden genealogy
Family: William de Percy / Adelis de Tunbridge (F2374)
m. Bef 1136-
Male
William de Percy
Birth of Topcliffe, Yorkshire, England Death Between 1174 and 1175 Burial Fountain Abbey, Yorkshire, England Marriage Bef 1136 [1, 2, 3] Other Spouse Sybil de Valognes | F1537 Marriage Between 1164 and 1166 Father Alan de Percy | F1397 Group Sheet Mother Emma de Gant | F1397 Group Sheet
Female
+ Agnes de Percy
Birth Death Bef 13 Oct 1204 Burial Whitby, Yorkshire, England Spouse Joscelin of Louvain | F1395 Marriage Between 1154 and 1161
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S1016] Medieval English Ancestors of Robert Abell by Carl Boyer III. Santa Clarita, California, 2001.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.