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Male John de Montfort, Duke of Brittany Click to view John de Montfort, Duke of Brittany in the family tree

John de Montfort, Duke of was born in 1339 in Nantes,Loire-Atlantique,France.  He died at the age of 60 in 1399.

John de Montfort, Duke of's family with Mary, Princess of England

‌John de Montfort, Duke of and Mary, Princess of were married in a religious ceremony in 1361 in Woodstock,England.

Source/Citation
Pedigree Resource File CD 6

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