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Male William de Saint Omer Click to view William de Saint Omer in the family tree

William was born in 1228 in Brundale, Norfolk, England.  William's father was Nicholas St. Omer I and his mother was Margareta of Hungary.  His paternal grandparents were Seigneur William de St. Omer IV of Fauquemberghe and Ida d'Avesnes; his maternal grandparents were King Bela III of Hungary and Princess Agnes Marie de Chatillon of Antioch.  He was an only child.  He died after October 19th, 1265 in Bramshaw, Norfolk, England.


William's family with Petronilla de Lacy

They had a son named Thomas.

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