1. | William Demontagu was born in 1303 in Cassington, Oxfordshire, England, United Kingdom; died on 30 Jan 1344 in Windsor Castle, Windsor, Berkshire, England, United Kingdom. William married Countess of Salisbury Katherine Degrandison in 1327 in Cassington, Oxfordshire, England, United Kingdom. Katherine (daughter of Baron of Grandison William De Grandison and Sybil Tregoz) was born in 1304 in Ewyas Harold, Herefordshire, England, United Kingdom; died on 23 Nov 1349 in Bisham, Berkshire, England, United Kingdom. [Group Sheet] [Family Chart] Children:
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