John III the Good (in Breton Yann III, in French Jean III) (8 March 1286 – 30 April 1341) was duke of Brittany, from 1312 to his death. He was son of Duke Arthur II and Mary of Limoges, his first wife. John was strongly opposed his father's second marriage to Yolande of Dreux, Queen of Scotland after Mary's death, attempting to contest its legality.
Born |
1286
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Died |
1341 (aged 54)
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Zodiac | |
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