Nielsen Hayden genealogy
Family: Nele de Mowbray / Mabel (F848)
m. Bef Sep 1170-
Father | Male
Nele de Mowbray
Born of Thirsk, Yorkshire, England 
Died 1191 Acre, Palestine Buried Married Bef Sep 1170 [1] Father Roger de Mowbray | F4559 Group Sheet Mother Alice de Gant | F4559 Group Sheet
Child 1 | Male
+ William de Mowbray
Born of the Isle of Axholme, Lincolnshire, England Died Bef 25 Mar 1224 Buried Newburgh Abbey, Yorkshire, England Spouse Avice | F783 Married
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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.