Philip IV of France
Domestically, his reign was marked by struggles with the Jews and the Knights Templar. In heavy debt to both groups, Philip saw them as a "state within the state" and a recurring threat to royal power. In 1306 Philip expelled the Jews from France, followed by the total destruction of the Knights Templar the next year in 1307. To further strengthen the monarchy, Philip tried to tax and take control of the French clergy, leading to a violent dispute with Pope Boniface VIII. The ensuing conflict saw the pope's residence at Anagni attacked in September 1303 by French forces with the support of the Colonna family. Boniface was captured and held hostage for a number of days. This eventually resulted in the transfer of the papal court to the  enclave of Avignon in 1309.