Nielsen Hayden genealogy
Family: Robert Aguillon / Margaret of Savoy (F10155)
m. 1269-
Father | Male
Robert Aguillon
Born of Addington, Surrey, England 
Died 15 Feb 1286 Buried Married 1269 [1] Other Spouse Joan de Ferrers | F2106 Married Father William Aguillon | F5214 Group Sheet Mother Joan | F5214 Group Sheet
Mother | Female
Margaret of Savoy
Born Died Bef 14 May 1292 Buried Other Spouse Baldwin de Revières | F10154 Married 1257 Father Thomas of Savoy | F10163 Group Sheet Mother Béatrix di Fiesco | F10163 Group Sheet
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Sources - [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.
- [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.