Excerpts from Books and Wikipedia
"Louis IX, king of France, led two disastrous crusades. On the first expedition, (1248-54) his forces took the Egyptian fort of Damietta. However, their attempts to penetrate inland Egypt were unsuccessful and they were surrounded at Sharamsah. Louis was forced to surrender and pay a huge ransom. Louis took the cross again in 1267, with Tunis at his target. From the outset his crusade was poorly supported . The fleet landed in Tunis in July 1270, and was immediately struck down by disease. Louis died on August 25, and the crusade ended with a negotiated treaty." [DK Timelines, p. 215]
"Louis's actions were inspired by Christian zeal and Catholic devotion. He decided to severely punish blasphemy (for which he set the punishment to mutilation of the tongue and lips), gambling, interest-bearing loans and prostitution. He spent exorbitant sums on presumed relics of Christ, for which he built the Sainte-Chapelle. He expanded the scope of the Inquisition and ordered the burning of Talmuds and other Jewish books. He is the only canonized king of France, and there are consequently many places named after him." [Wikipedia]