John V, sometimes numbered as VI, bynamed John the Wise, was Duke of Brittany and Count of Montfort from 1399 to his death. His rule coincided with the height of the Hundred Years' War between England
Peter II, was Duke of Brittany, Count of Montfort and titular earl of Richmond, from 1450 to his death. He was son of Duke John VI and Joan of France, and a younger brother of Francis I.
John V of Brittany
…Catherine (1416 – aft. 1421) Peter II, Duke of Brittany (7 July 1418 – 22 September 1457) Gilles of Brittany (1420 – 24 April 1450), Lord of Chantocé…