Nielsen Hayden genealogy
Family: Geoffrey I de Mandeville / Adeliza de Balts (F592)
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Male
Geoffrey I de Mandeville
Birth of Manneville, Seine-Inferieure, Normandy, France 
Death Aft 1086 Burial Westminster Abbey, Westminster, Middlesex, England Marriage Father Mother
Female
Adeliza de Balts
Birth Death Bef 1100 Burial Westminster Abbey, Westminster, Middlesex, England Father Mother
Male
+ William I de Mandeville
Birth of Great Waltham, Essex, England Death Bef May 1116 Burial Spouse Margaret fitz Eudes | F1209 Marriage
Female
+ Beatrice de Mandeville
Birth of Rycote, Oxfordshire, England Death Burial Spouse Geoffrey of Carshalton | F928 Marriage Bef 1084