William de Mandeville Earl of Essex 
William de Mandeville Earl of's father was Geoffrey , Earl of Essex FitzPiers and his mother was Betrice de Say. His paternal grandparents were Piers de Lutegareshale and Maud , Lady of Costow de Mandeville. He had a brother and two sisters, named Geoffrey , Earl of Essex, Henry and Maude FitzGeoffrey , Cts de Essex. He had two half-brothers and two half-sisters, named John , Lord Kirtling Justiciar, William, Cecily and Hawise.
Source/Citation
{GEDCOM File : 198214.ged}
{GEDCOM File : 198214.ged}
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