Kerak - a large crusader castle located in Jordan, once stronghold of Raynald of Châtillon built in 1142. Muslims had sought to take Kerak many times, finally in 1187 they stretched its defenses to breaking point. At one point, 9 catapults were bombarding the walls and inhabitants within. Word reached King Baldwin IV of Jerusalem who, although suffering from leprosy and had to be carried on a stretcher, personally led the army of knights forcing Saladin to lift the siege.
The Military and Hospitaller Order of Saint Lazarus of Jerusalem is an order of chivalry originally founded at a leper hospital after 1098 by the crusaders of the Latin Kingdom of Jerusalem. It was established to treat leprosy, its knights originally being lepers themselves. It is possible that king Baldwin IV of Jerusalem was a knight of this order or was, at least, assisted by it.The symbol of the Order is a green eight-pointed Maltese Cross.
"Kingdom of Heaven" by Ridley Scott (2005) --- King Baldwin IV (leprous king) : "A King may move a man, a father may claim a son, but remember that even when those who move you be Kings, or men of power, your soul is in your keeping alone. When you stand before God, you cannot say, "But I was told by others to do thus." Or that, "Virtue was not convenient at the time." This will not suffice. Remember that." --- Clic 2X for other quotes of the film.