John II, Duke of Brittany

John II of Dreux (in French Jean II de Dreux) (1239 – November 18, 1305) was Duke of Brittany and Earl of Richmond, from 1286 to his death. He was son of Duke Jean I and Blanche, princess of Navarre.

On January 22, 1260, John married Princess Beatrice of England, a daughter of King Henry III of England and Eleanor of Provence. They had six children:

1. Arthur II, Duke of Brittany
2. John de Bretagne, 1st Earl of Richmond
3. Pierre, Viscount de Leon
4. Marie de Dreux, wife of Guy III of Châtillon
5. Blanche de Dreux, wife of Philip of Artois
6. Eleonore, Abbess of Fontevrault

He was killed during the celebrations surrounding the coronation of Pope Clement V in 1305. John was leading the pope's horse through the crowd. So many spectators had piled atop the walls that one of them crumbled and collapsed right on top of the unfortunate duke.