Jean de Montfort-Castres (died 1300), count of Squillace (kingdom of Naples), son of Philippe II de Montfort, lord of Castres, and of Jeanne de Lévis-Mirepoix
John II of Montfort (1294–1345), count of Montfort, contested Duke of Brittany, one of two sides in the Breton War of Succession
John IV, Duke of Brittany (1339–1399), son of the former, Duke of Brittany from 1364 to 1399, count of Richemont and count of Montfort (1345–1399)
Jean de Montfort (1385–1414), who later took the name Guy XIII de Laval, Lord of Laval
Topics referred to by the same term
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