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

William was born in 1255 in Cassington, Oxfordshire, England.  William's father was Pierre and his mother is Agnes De Neuchatel.  He was an only child.  He died at the age of 80 on June 27th, 1335 in Gascony, France.


William's family with Sybil De Tregoz

‌William and Sybil were married in a religious ceremony in 1285 in Donyatt, Somersetshire, England.  They had a son and a daughter, named Piers and Katherine.

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