Nielsen Hayden genealogy
Family: William de Beauchamp / Idonea de Longespée (F5347)
m. Abt Jan 1220-
Father | Male
William de Beauchamp
Born Abt 1185 Died Bef 9 Oct 1260 Buried Married Abt Jan 1220 [1, 2] Father Simon de Beauchamp | F2762 Group Sheet Mother Isabella | F2762 Group Sheet
Mother | Female
Idonea de Longespée
Born Died Aft 1266 Buried Father William I Longespée | F842 Group Sheet Mother Ela of Salisbury | F842 Group Sheet
Child 2 | Female
+ Beatrice de Beauchamp
Born Died Abt 1281 Buried Spouse Thomas fitz Otes | F1481 Married Bef 1264
Child 3 | Female
+ Maud de Beauchamp
Born of Bedford, Bedfordshire, England 
Died Bef 4 Apr 1273 Buried Church of the Friars Preachers, Pontefract, Yorkshire, England Spouse Roger de Mowbray | F151 Married Bef 1257 Spouse Roger le Strange | F735 Married Bef 15 Jul 1270
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Sources - [S142] Royal Ancestry by Douglas Richardson. Kimball G. Everingham, ed. 2013.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008., "by 1220".
- [S142] Royal Ancestry by Douglas Richardson. Kimball G. Everingham, ed. 2013.