A native of Milan, Alessio di Siregno was ordained a priest in the Order of Friars Minor.[1][2] He obtained the degree of master of theology, and became a celebrated preacher.[3]
On 27 Aug 1411, he was appointed Bishop of Piacenza by Pope John XXIII. He refused to accept the appointment, and made an appeal to the ecumenical council which was being contemplated, and which actually took place in Constance beginning in November 1414.[6] The mere mention of an appeal to a council brought him a letter from Pope John dated 12 January 1412, ordering the officials of the bishops of Nice, Embrun, and Grenoble, to expel Bishop Alessio from Gap and incarcerate him. Alessio took up his bishopric in Piacenza.[7] While bishop, he was the principal co-consecrator of Costanzo Fondulo, Bishop of Cremona (1412).[1] He attended the Council of Constance (1414–1418).[8] In 1425, with the consent of Pope Martin V, he granted possession of the monastery of San Sisto to the Benedictine Order of Monte Cassino of S. Giustino of Padua.[9] He attended the Council of Basel, which was summoned by Martin V, and which opened on 14 December 1431[10]
He served as Bishop of Piacenza until his death in Cremona on 1 January 1447. His body was transported to Piacenza, where he was buried in the Cathedral.[11]
Eubel, Conradus, ed. (1913). Hierarchia catholica (in Latin). Vol. Tomus 1 (second ed.). Münster: Libreria Regensbergiana. (in Latin)
Ughelli, Ferdinando; Coleti, Niccolo (1717). Italia sacra sive de Episcopis Italiae (in Latin). Vol. Tomus secundus (II) (secunda ed.). Venice: Apud Sebastianum Coleti. p. 232.