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Male William 1st Baron GRANDISON Click to view William 1st Baron GRANDISON in the family tree

William 1st Baron was born about 1255 in Ashperton, Hereforshire, England.  William 1st Baron's father was Amadeus de GRANDISON and his mother was Benoite De La TOUR.  His paternal grandparents were Pierre I Sire de GRANDSON and Agnes  NEUCHATEL.  He was an only child.  He died on June 27th, 1335 in Lambourn, Berkshire, England.


William 1st Baron's family with Sybil de TREGOZ

They had a daughter named Katherine de.