Arthur I

Arthur I (29 March 1187 - ? ) was head of the House of Plantagenet and king of England and the Angevin Empire in the 13th century.

He was the Duke of Brittany, and the favorite nephew of King Richard the Lionheart, and fought with him against his treacherous brother, Prince John.

He eventually succeeded Richard on the throne after his uncle's death in 1219, beginning a long reign of justice and wisdom.

Differences to our timeline
In the real world, Arthur was captured by Prince John's forces on 31 July 1202 while besieging Mirebeau, and imprisoned at Falaise in Normandy. The following year he was transferred to Rouen, and then vanished in April 1203. His ultimate fate remains a mystery to this day.