John II of Brittany

John II (1239–1305), eldest son of John I the Red, was Duke of Brittany from 1286 and Earl of Richmond. In 1260 he married Beatrice, daughter of Henry III of England, and in 1271 joined Edward I on the Ninth Crusade. In the 1294 Gascon War he first aided Edward, but after English troops sacked Saint-Mathieu Abbey in 1296 he turned to Philip IV of France, who made him a peer of France in 1297, whereupon Edward deprived him of Richmond.

He fought at Mons-en-Pévèle, and in 1305 attended Clement V's coronation at Lyon, where a collapsing wall crushed him. He died on 18 November.