This prince's betrothal to Alys of France came to nothing, possibly because this man's father had taken Alys as a mistress. He built the strongest castle in medieval times, Chateau Gaillard. Though his Hospitallers under Garnier de Nablus broke ranks, he nevertheless won the Battle of Arsuf. This king successfully took Acre in a war that he fought 
This prince's betrothal to Alys of France came to nothing, possibly because this man's father had taken Alys as a mistress. He built the strongest castle in medieval times, Chateau Gaillard. Though his Hospitallers under Garnier de Nablus broke ranks, he nevertheless won the Battle of Arsuf. This king successfully took Acre in a war that he fought alongside Frederick I and Philip II of France. He was captured by Leopold V, duke of Austria after making peace with Saladin in the Third Crusade. For 10 points, name this English king known as "the Lionheart."
This prince's betrothal to Alys of France came to nothing, possibly because this man's father had taken Alys as a mistress.
Richard I [or Richard the Lionhearted before mentioned]