homas Agni of Leontino, Dominican archbishop of Cosenza, and later patriarch of Jerusalem, was the first to write a life of the blessed martyr. He lived for many years with Peter of Verona and had been his superior
He was born in the city of Verona into a family perhaps sympathetic to the Cathar heresy. Peter went to a Catholic school, and later to the University of Bologna, where he is said to have maintained his orthodoxy and, at the age of fifteen, met Saint Dominic. Peter joined the Order of the Friars Preachers (Dominicans) and became a celebrated preacher throughout northern and central Italy.