Saint Ferdinand III was a prominent king of Castile and Leon during the 13th century. He is best known for his military conquests, particularly the capture of Seville in 1248, which played a significant role in the Christian Reconquista of the Iberian Peninsula. His reign marked a period of territorial expansion and consolidation of power in the region. Ferdinand was canonized as a saint by the Catholic Church in 1671, recognized for his piety and dedication to the Christian faith. He is often celebrated for his efforts to promote peace and justice, as well as for his support of the Franciscan order. His legacy continues to be honored in various parts of Spain.