Arthur I, Duke of Brittany (born 1187)

Arthur I, Duke of Brittany

Duke of Brittany from 1196 to 1203

Arthur I was 4th Earl of Richmond and Duke of Brittany between 1196 and 1203. He was the posthumous son of Geoffrey II, Duke of Brittany, and Constance, Duchess of Brittany. Through Geoffrey, Arthur was the grandson of King Henry II of England and Duchess Eleanor of Aquitaine,…