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Male John IV (5th Duke of Brittany) de Dreux Click to view John IV (5th Duke of Brittany) de Dreux in the family tree

John IV (5th Duke of Brittany) was born in 1339.  John IV (5th Duke of Brittany)'s father was Jean IV de Bretagne and his mother was Jean de Dampierre.  His paternal grandparents were Arthur II de Bretagne and Yolande Comptesse De Montfort de Dreux.  He was an only child.  He died at the age of 60 on November 1st, 1399.


John IV (5th Duke of Brittany)'s first family with Joanne of Navarra

‌John IV (5th Duke of Brittany) and Joanne of were married in a religious ceremony on September 11th, 1386.  They had two sons named John V (Peter) (Duke of Brittany) and Richard De Bretagne.


John IV (5th Duke of Brittany)'s second family with Joan (of Kent) Holland


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