
Louis IX and Margaret of Provence
Louis inherited the French throne at twelve. As king, he extended the reach of royal justice, curbed private wars among the nobility, and built the Sainte-Chapelle to house the Crown of Thorns.
Margaret of Provence (c. 1221–1295) accompanied Louis to Egypt. When he was taken prisoner, she promised to provision the Genoese and Pisans if they stayed in Damietta, keeping the city in French hands for the negotiations over his release.
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During the Seventh Crusade, Louis took Damietta. His brother Robert died at Mansura, and disease and dwindling supplies forced the army to retreat. Louis was captured at Fariskur. The French returned Damietta and paid a ransom, and Louis spent another four years in the Holy Land.
Louis died of illness outside Tunis in 1270 during the Eighth Crusade. Boniface VIII canonized him in 1297. He was revered for his ascetic life, his care for the poor, and his devotion to justice.
Crown, faith and spectacle
In history
Louis IX paid 135,000 livres tournois for the Crown of Thorns — roughly half the kingdom’s annual income. He commissioned the Sainte-Chapelle to house the relics. Built in under seven years, the luminous chapel at the heart of the royal palace expressed both his faith and the power of the French crown.
In the novel
At Blois, a tournament is prepared for the king’s arrival. Knights clash before noble spectators; the royal presence makes the contest a chance to earn honour and recognition.
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