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John IV, Duke of Mecklenburg (before 1370 – 16 October 1422) was sole ruler of the Duchy of Mecklenburg from 1384 to 1395 and co-regent from 1395 to 1422. Life. John IV was the only son of the Duke Magnus I of Mecklenburg and his wife Elisabeth of Pommern-Wolgast.
- before 1370
- Magnus I, Duke of Mecklenburg
- Elisabeth of Pomerania-Wolgast
- Jutta von Hoya, Catherine of Saxe-Lauenburg
Regency of Albert V, Duke of Mecklenburg (1422-1423) and Catherine of Saxe-Lauenburg (1422-1436) Sons of John IV, reunited the parts held by the coregency period (1379-1423). Henry IV the Fat: 1417 First son of John IV and Catherine of Saxe-Lauenburg: 16 October 1422 – 9 March 1477 Duchy of Mecklenburg (part 3 until 1423; all 3 parts since 1423)
RulerRulerBornReign1090 ?1131 – August 1160c.1130? First son of NiklotAugust 1160 – 30 December 1178c.1130? Second son of NiklotAugust 1160 – June 1164c.1130? Third son of NiklotAugust 1160 – c.1175Lordship of Lolland (vassalage to ...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.
- 12 April 1365 – 1 November 1399
- John of Montfort
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 Editors of Encyclopaedia Britannica
Mar 15, 2024 · Role In: War of the Breton Succession. 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.
- The Editors of Encyclopaedia Britannica
Apr 17, 2020 · In the 1350s, the ambitious first Duke of Mecklenburg, Albert II, involved himself more directly in the internal politics of the Scandinavian kingdoms, using his wife’s connections, as sister of King Magnus IV of Sweden, and grand-daughter of Haakon V of Norway. With the support of disaffected nobles, he led a coup that allowed his son Albert ...
May 3, 2019 · Johann IV Mecklenburg was a member of the aristocracy in Europe. Biography. Johann IV was the only known son of Magnus I, Duke of Mecklenburg, and his wife, Elisabeth of Pomerania, and was possibly born about 1370 or perhaps a few years later. [1] .
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