Clisson, Olivier de

Clisson, Olivier de

(ōlēvyā` də klēsôN`), 1336–1407, French soldier, b. Brittany. He fought on the English side in the War of the Breton SuccessionBreton Succession, War of the,
1341–65, an important episode of the Hundred Years War. Duke John III of Brittany died in 1341 without heirs. The succession was contested by his half-brother, John de Montfort, who was backed by Edward III of England, and by Charles of
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 but entered the French service as companion in arms to Bertrand Du GuesclinDu Guesclin, Bertrand
, c.1320–80, constable of France (1370–80), greatest French soldier of his time. A Breton, he initially served Charles of Blois in the War of the Breton Succession.
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. In 1380 he became constable of France. He defeated (1382) the insurgents of Ghent under Philip van ArteveldeArtevelde, Philip van,
1340–82, Flemish popular leader, captain general of Ghent; son of Jacob van Artevelde. In the struggle between the so-called Goods (the propertied classes supported by the count of Flanders) and the Bads (the workers, led by the weavers), he put
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 at Roosebeke (modern-day Westrozebeke). One of the MarmousetsMarmousets
, [Fr.,=little fellows], ministers of King Charles V of France, so called by the great nobles, who were contemptuous of their humble origins. Olivier de Clisson was the most prominent Marmouset.
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, he made use of his position to satisfy his boundless avidity; he became one of the richest men of his time. After King Charles VI became (1392) insane, Clisson retired to Brittany, where he served as guardian of the duchy after the death (1399) of Duke John de Montfort.
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