Barons' Crusade The Barons' Crusade, also known as the Crusade of 1239, is one of the most successful Crusades since the First. Started by Pope Gregory IX, this Crusade resulted in Jerusalem returning to the largest size it has ever been since 1187. (jan 1, 1239 – jan 1, 1241)
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Date:
jan 1, 1239
jan 1, 1241
~ 2 years