His personal confessor Robert de Sorbon provides the nickname of the University of Paris.
Freeing this monarch from imprisonment was ostensibly the aim of a group of destitute peasants led by the Master of Hungary in the  pastoureaux  revolt. His personal confessor Robert de Sorbon provides the nickname of the University of Paris. Following the Saintonge War, this monarch agreed to lenient terms with Henry III of England. Shortly thereafter, he appointed his mother Blanche of Castile regent and embarked on a military (*) campaign. He paid a large sum to Baudouin II to obtain the Crown of Thorns and built the Sainte-Chapelle to house the relic. On a march through the desert back to the port of Damietta, his army was captured by the Mamluks and he was held for ransom. This monarch led the Seventh Crusade. For 10 points, name this canonized French king.
Freeing this monarch from imprisonment was ostensibly the aim of a group of destitute peasants led by the Master of Hungary in the  pastoureaux  revolt.
Louis IX [or  Saint Louis] 