Not only wasn;t he a Templar, but...

Reynald of Chatillons was such a disreputable character that he would have been drummed out of the Templars and excommunicated if he had joined. Templars were forbidden to come into contact with women unless necessary -- Reynald married two women for their lands (his second wife came with the wonderful door-prize of Kerak, by the way...) and was known as a freebooter and all-around cad -- in fact his most famous exploit was "kidnapping" what was believed by Muslims to be the body of the prophet Mohammed from Medina and holding it for ransom. That gained him the undying emnity of Saladin and led directly to his execution by Saladin after being captured at, IIRC, Hattin.

Historical Trivia

The movie does not claim to have any historical accuracy, and to quote the rules, "Trivia, no matter how interesting, is not a Nitpick." This is historical trivia and not a nitpick.\r\r