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Male John De Montagu Click to view John De Montagu in the family tree

John was born about 1325 in Cassington, Oxfordshire, England.  John's father was William De Montagu and his mother was Katherine De Grandison.  His paternal grandparents were William De Montagu and Elizabeth De Montfort; his maternal grandparents were William De Grandison and Sybil De Tregoz. He had a sister named Elizabeth (of Salisbury).  He died before March 4th, 1390 in Cassington, Oxfordshire, England.  He was buried in Cathedral, Salisbury, Wiltshire, England.


John's family with Margaret de Monthermer

‌John and Margaret were married in a religious ceremony on July 2nd, 1340 in Saint Humbert, Stokenham, Devonshire, England.  They had a son named John.

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