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Male Sir William De Grandison Click to view Sir William De Grandison in the family tree

Sir William was born about 1263 in Cassington, Oxfordshire, England.  Sir William's father was Amadeus De Grandison and his mother was Banoile De La Tour De Gerenstein.  His paternal grandparents were Pierre De Grandison and Agnes De Neuchatel.  He was an only child.  He died on June 27th, 1335 in Lombourn Eaton, Hereford, England.


Sir William's first family with Blanche de Savoie

They had a daughter named Agnes.


Sir William's second family with Sibyle De Tregoz

They had three sons and three daughters, named Piers, John, Otho, Mabilia, Katherine and Agnes.

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