Arthur II of Brittany

Arthur II (1261–1312) was Duke of Brittany from 1305, eldest son of John II and Beatrice of England. In 1275 he married Marie, who bore his heir John III; after her death he married Yolande of Dreux in 1292, and this marriage produced John of Montfort, future claimant to the duchy.

Arthur kept Brittany independent of the French crown, divided it into eight military districts, and in 1309 summoned the first Estates of Brittany, the first French assembly including the third estate. He died on 27 August 1312 and was buried in the Cordeliers convent at Vannes.