He was born in Casale Monferrato around 1320 and entered the Franciscan order in the Genoese province. He was lecturer in the Franciscan stadium at Assisi from 1335 to 1340. He subsequently was lector at Cambridge ca. 1340 to 1341, where he encountered the mathematical physics developed by the Oxford Calculators. He was also an inquisitor in Florence, and a lector in Bologna from 1346 to ca. 1352. In 1375 Pope Gregory XI appointed him papal legate to the court of King Frederick of Sicily.