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Male William De+ Montagu Click to view William De+ Montagu in the family tree

William De+ was born in 1302 in Cassington, Oxfordshire, England.  William De+'s father was William De+ Montagu and his mother was Elizabeth De+ Montfort.  His paternal grandparents were Simon De+ Montagu and Hawaise De+ Saint Amand; his maternal grandfather was Piers De+ Montfort and his maternal grandmother is Matilda De La+ Warr. He had two sisters named Alice De+ and Mary.  He was the oldest of the three children. He had a half-brother named Thomas De+.  He died at the age of 41 on January 30th, 1343 in Windsor Castle, Berkshire, England.


William De+'s family with Catherine De+ Grandison

‌William De+ and Catherine De+ were married in a religious ceremony in 1327.  They had three sons and four daughters, named John De+, William De, Robert, Elizabeth De+, Sibyl+, Philippa+ and Anne.


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