John of Montfort: Difference between revisions

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John IV
Citizens of Nantes paying homage to John IV
Duke of Brittany
Reign	1341–1345
Predecessor	John III
Successor	John V
Born	1295 Hennebont
Died	Error: Need valid birth date (second date): year, month, day Hennebont
Spouse	Joanna of Flanders
House	House of Dreux
Father	Arthur II, Duke of Brittany
Mother	Yolande de Dreux

John IV of Montfort (in Breton Yann Moñforzh, in French Jean de Montfort) (1295 – 16 September 1345^{[citation needed]}, Château d'Hennebont), was Duke of Brittany, from 1341 to his death. He was the son of Arthur II, Duke of Brittany and his second wife, Yolande de Dreux.

In 1322 he succeeded his mother as count of Montfort, and in 1329, he married Joanna of Flanders at Chartres. They had two children:^[1]

• John V, Duke of Brittany (1339–1399)
• Joan of Brittany, Baroness of Drayton (1341 – aft. 20 October 1399), married before 21 October 1385 Ralph Basset, 4th Baron Basset de Drayton

When his half-brother, John III, Duke of Brittany, died with no male heirs in 1341, John IV decided to contest the rights of his niece, Joanna of Penthièvre, and her husband, Charles of Blois, to the Duchy of Brittany. This led to the Breton War of Succession, which in turn became part of the Hundred Years' War. His patron in this quest was King Edward III of England.^[2]

• Dukes of Brittany family tree

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