The imprisonment of this ruler's sister Joan led to his intervention in Sicily, which was then being ruled by Tancred I.
The imprisonment of this ruler's sister Joan led to his intervention in Sicily, which was then being ruled by Tancred I. At one point during his reign, he transferred power to his advisor William Longchamp. This ruler was sent on a military campaign following the Battle of Hattin. With Guy de Lusignan and Philip II of France, he led a successful siege of (*) Acre but failed to invade Egypt and strike a decisive blow to his rival Saladin. For 10 points, name this English king of the 1100's known for his bravery while campaigning in the Holy Lands during the Third Crusade.
The imprisonment of this ruler's sister Joan led to his intervention in Sicily, which was then being ruled by Tancred I.
{Richard} I of England [or Richard the {Lionhearted}; or Richard Coeur de Lion; prompt on