William de Grandison 
William's father was Pierre I de Grandison and his mother was Agnes von Neuenburg. His paternal grandparents were Ebal IV de Grandison and Beatrice de Geneva. He was an only child. He died in 1335.1 General Notes
[charlemegne.FTW]
1st Lord Grandison.
Guillaume=William de Grandson, went to England ca 1280s; he wa s summoned to Parliament 1299, whereby he is held to have becom e Baron Grandison; he d. 1335; he m. ca 1285 Sibyl Tregoz (d.133 4)
Details of William's family with Sibella de Tregoz
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