St. Casimir

St. Casimir was born on October 3, 1458, at the royal court of Kraków, the third of thirteen children of King Casimir IV of Poland and Elizabeth of Austria. As a prince of the Jagiellonian dynasty, he was heir to one of the great political houses of fifteenth-century Europe, and he was educated by the historian Jan Długosz, who formed him in both learning and piety. From an early age, those around him noted that the young prince took his faith far more seriously than his rank. At thirteen, Casimir was sent at the head of an army to claim the throne of Hungary at the invitation of Hungarian nobles. The expedition collapsed without a battle, and the failure proved a turning point: Casimir returned home convinced that his calling lay not in conquest but in prayer and service. He later declined an advantageous marriage arranged by his father, choosing instead a life of celibacy. When his father was away in Lithuania in the early 1480s, Casimir governed Poland capably and justly, earning a reputation for fairness and for generosity toward the poor, the sick, and prisoners. His spirituality centered on the Eucharist and on tender devotion to the Blessed Virgin Mary. He was known to rise before dawn and wait at the church doors for them to open, and he is traditionally associated with the Marian hymn "Omni die dic Mariae" ("Daily, Daily Sing to Mary"), a copy of which was buried with him. Weakened by austerities and afflicted with lung disease, he died at Grodno on March 4, 1484, at the age of twenty-five. Devotion to Casimir spread quickly in Poland and Lithuania, with miracles reported at his tomb in Vilnius. Pope Leo X opened his cause in 1517, and his canonization is traditionally dated to 1521, though the process was completed and confirmed in later pontificates after the original documents were lost. His feast is kept on March 4, and he is honored as patron of Poland, Lithuania, and young people. His relics rest in a silver sarcophagus in the Chapel of St. Casimir in Vilnius Cathedral, one of Lithuania's most beloved pilgrimage sites.