[2] Bellacci travelled across the Middle East and the Italian peninsula to preach and administer to people despite not being an ordained priest.

During his youth he got into a good deal of trouble on various occasions, and led such a wild and dissolute life as an adolescent that parents warned their sons to keep their distance from him.

[2] Persuaded by a friend to change his ways, he tried to enter a religious order but found strong resistance to being accepted.

He joined the Third Order of Saint Francis in Fiesole[3] under the spiritual guidance of Friar Giovanni da Stronconio and became noted for keeping vigils and fasting.

[5] He founded friaries in Corscia[2] Pope Martin V called him to preach in the northern cities against the "Fraticelli" who were a group of heretical Franciscans and was also made Vicar General at the pope's behest; he and Albert Berdini of Sarteano in 1438 were later sent to the Middle East to cities such as Damascus and Cairo in order to promote the reunification of the Eastern and Western Churches when he was over 70.