Jean V de Montfort ^{1 2}

  General Notes:

John V (in French Jean V), known as the Conqueror, was son of Duke John IV and Joanna of Flanders.

The first part of his rule was tainted by the Breton War of Succession, fought against his cousin Joanna of Dreux and her husband Charles of Blois. In 1364, John V managed to win an important victory against the House of Blois in the battle of Auray, with the help of the English army. His rival Charles was killed in battle and Joanna forced to sign the Treaty Guérande in April 12, 1365. In the terms of the treaty, Joanna gives up her rights to Brittany and recognizes John V as sole master of the duchy. Surprisingly, John V declares himself a vassal to king Charles V of France, not to Edward III of England who helped him to become duke. Nevertheless, the French exerted pressure over Brittany and the local nobles and forced John V to exile between 1373 and 1379.

John V married three times: 1) princess Mary of England (1344-1362), daughter of Edward III; 2) Joanna of Holland, countess of Kent (1350-1384) and 3) princess Joanna of Navarre (1370-1437), daughter of king Charles II, the mother of his children.

  Noted events in his life were:

• Acceded: Duc de Bretagne, 1364.

Jean married Mary Plantagenet, daughter of Edward III of England and Philippa of Hainault, in 1361 in Woodstock Palace, Woodstock, Oxfordshire, England. (Mary Plantagenet was born on 10 Oct 1344, died in 1362 and was buried in Abingdon Abbey, Abingdon, Oxfordshire, England.)

Jean next married Joan de Holand, daughter of Thomas de Holand and Joan "The Fair Maid of Kent" Plantagenet, in 1366. (Joan de Holand was born circa 1356 and died in 1384.)

Jean next married Jeanne d' Évreux, daughter of Charles I d' Évreux and Jeanne de France, on 11 Sep 1386 in Saille-pres-Guerrand, Navarre, Spain. (Jeanne d' Évreux was born circa 1370 in Pamplona, Spain, died on 9 Jul 1437 in Dower House 'Pirgo', Havering-atte-Bower, Essex, England and was buried in Canterbury Cathedral, Canterbury, Kent, England.)