Nielsen Hayden genealogy
Family: Robert de Mowbray / Maud de l'Aigle (F1856)
m. 1095
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Male
Robert de Mowbray
Birth Bef 1059 Death Aft 1125 St. Albans Abbey, St. Albans, Hertfordshire, England 
Burial Marriage 1095 [1] Father Mother
Female
Maud de l'Aigle
Birth Death Aft 1129 Burial Other Spouse Nele d'Aubigny | F1469 Marriage Aft 1107 Father Richer de l'Aigle | F5711 Group Sheet Mother Judith le Goz d'Avranches | F5711 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.