Saint Bonaventure, Italian San Bonaventura, original name Giovanni Di Fidanza, (born c. 1217, Bagnoregio, Papal States—died July 15, 1274, Lyon; canonized April 14, 1482; feast day July 15), leading medieval theologian, minister general of the Franciscan order, and cardinal bishop of Albano. He wrote several works on the spiritual life and recodified the constitution of his order (1260). He was declared a doctor (teacher) of the church in 1587.
Bonaventure’s wisdom and ability to reconcile opposing views moved Pope Gregory X to name him cardinal bishop of Albano, Italy, in May 1273, though Bonaventure had declined to accept appointment to the see of York, England, from Pope Clement IV in 1265. Gregory consecrated him in November at Lyon, where he resigned as minister general of the Franciscans in May 1274. At the second Council of Lyon he was the leading figure in the reform of the church, reconciling the secular (parish) clergy with the mendicant orders. He also had a part in restoring the Greek church to union with Rome. His death, at the council, was viewed as the loss of a wise and holy man, full of compassion and virtue, captivating with love all who knew him. He was buried the same day in a Franciscan church with the pope in attendance. The respect and love that was held for Bonaventure is exemplified in the formal announcement of the council: “At the funeral there was much sorrow and tears; for the Lord has given him this grace, that all who saw him were filled with an immense love for him.” His exemplary life as a Franciscan and the continual influence of his doctrine on the life and devotion of the Western church won for him a declaration of sanctity by Pope Sixtus IV; he was designated a doctor of the church by Sixtus V.