Riel was first educated by Roman Catholic priests at St. Boniface. At first he mistakes Dante for Pope Boniface VIII. The successor to Celestine V was a Roman of the Caetani family, Boniface VIII. Later writers saw Adalrich as the successor in Alsace of Duke Boniface. On 30 October, the truce solicited by Pope Boniface was signed by Edward at Dumfries. His name is mainly connected with the quarrel between Philip IV and Pope Boniface VIII. Philip responded by sending knights to Italy to arrest Boniface. This crusade, preached by Pope Boniface IX, was very popular in Hungary. Shells with fuses were used at the 1421 siege of St Boniface in Corsica. Both Boniface and Philip had married into the Byzantine imperial family. No subsequent popes were to repeat Boniface VIII's claims. In the 11th century, Mantua became a possession of Boniface of Canossa, marquis of Tuscany. He was succeeded by Boniface IX. He was consecrated only two days after the death of his predecessor, Boniface V. Bob Boniface and Robin Krieg designed the exterior of the third generation CTS.