Crescenzio is the Italian form of the name Crescentius.
These included the Presentation at the Temple by Ambrogio Lorenzetti (altar of St. Crescentius, 1342), the Nativity of the Virgin by Pietro Lorenzetti (1342, Altar of St. Sabinus), and a Nativity, now disassembled, attributed to Bartolomeo Bulgarini from 1351 (altar of St. Victor).
Once Otto III had returned to Germany, the faction headed by Crescentius II violently unseated Gregory V and, with the active support of the Eastern Emperor, Basil II, acclaimed John as Pope John XVI (997–998).