William of Cassingham

Willikin of the Weald(Unknown – 1757), born William of Cassingham, was an English Master Assassin and expert archer who fought during the First Barons' War.

Rallying a guerilla force against the english Barons and their ally, the Prince Louis VIII of France, Willikin favored the rule of King John. While not an admirer of John's despotic rule, he favored it over the baronial rule, being a supporter of John's son, the Prince Henry.

Reference

 * Assassin's Creed: Memories