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Male John de Montagu , Sir Click to view John de Montagu , Sir in the family tree

John de was born about 1299 in Cassington, Oxfordshire, England.  John de's father was William III 2nd Baron de Montagu , KB and his mother was Elizabeth de Montfort.  His paternal grandparents were Simon 1st Baron de Montagu , Sir and Aufrica Princess of Isle of Man; his maternal grandparents were Piers (Peter) de Montfort , Sir Knight and Maud (Matilda) de la Mare , Heiress of Ashtead. He had a brother and a sister, named William IV de and Alice.  He was the oldest of the three children. He had a half-sister named Joan.  He died before August 14th, 1317 in (dsp & vp).

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