This father of Philip III suffered a defeat at the hands of Turanshah's Ayyubid forces at the battle of Fariskur, which resulted in his imprisonment during the Seventh Crusade.
After one of this ruler's military defeats, a monk called the Master of Hungary began the so-called Shepherds' Crusade. An important biography of this man was written by Jean de Joinville. Along with his son Jean Tristan, he died in Tunis, with his last words being "Jerusalem, Jerusalem." This father of Philip III suffered a defeat at the hands of Turanshah's Ayyubid forces at the battle of Fariskur, which resulted in his imprisonment during the Seventh Crusade. This son of Blanche of Castile placed the Crown of Thorns and a fragment of the True Cross in a building he had ordered the construction of, the Sainte-Chapelle, reflecting his devout Catholicism. For 10 points, name this king of France, the only one to be canonized.
After one of this ruler's military defeats, a monk called the Master of Hungary began the so-called Shepherds' Crusade.
{Louis IX} [or {Saint Louis}]