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Between 1380 and 1385, John IV built the Château de l'Hermine ( Castle of Hermine) in Vannes, which became a defensive fortress and dwelling for the Dukes of Brittany. He built it in order to benefit from the central position of the city of Vannes in his duchy. In 1397, Duke John IV finally managed to extricate Brest from English control by ...
John IV (or V) (born c. 1340—died Nov. 1, 1399, Nantes, Fr.) was the duke of Brittany from 1365, whose support for English interests during the Hundred Years’ War (1337–1453) nearly cost him the forfeit of his duchy to the French crown. The instability of his reign is attributable not only to his alliances with England but also to his ...
- The Editors of Encyclopaedia Britannica
Mar 15, 2024 · John (IV) (died 1345) was a claimant to the duchy of Brittany upon the death of his childless half brother, John III.He was the only surviving son of Arthur II.. At first, John of Montfort had recognized John III’s designation of Charles of Blois (nephew of King Philip VI of France) as the successor; but then John of Montfort reneged, had himself crowned at a convocation of bishops and lords ...
- The Editors of Encyclopaedia Britannica
John IV was the king of Portugal from 1640 as a result of the national revolution, or restoration, which ended 60 years of Spanish rule. He founded the dynasty of Bragança (Braganza), beat off Spanish attacks, and established a system of alliances. John, duke of Bragança, the wealthiest nobleman in
- The Editors of Encyclopaedia Britannica
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Nov 13, 2016 · John is first mention in 1341 when his childless uncle, John III, duke of Brittany, provided him with 20,000 livres from his patrimony. However, when the duke died on 30 April 1341, the duchy was thrown into turmoil. Civil war erupted when John’s father and uncle-by-marriage, Charles de Blois, both laid claim to the duchy.
John IV was born at Vila Viçosa and succeeded his father Teodósio II as Duke of Braganza when the latter died insane in 1630. He married Luisa de Guzmán (1613–66), the eldest daughter of Juan Manuel Pérez de Guzmán, 8th Duke of Medina Sidonia , in 1633.
John IV the Conqueror KG (in Breton Yann IV, in French Jean IV, and traditionally in English sources both John of Montfort and John V) (1339 – 1 November 1399), was Duke of Brittany and Count of Montfort from 1345 until his death and 7th Earl of Richmond from 1372 until his death.
