From 1275 onwards he played an active part in the Romagnole Wars and factions. He is chiefly famous for the domestic tragedy of 1285, recorded in Dante's Inferno, when, having detected his wife, Francesca da Polenta (Francesca da Rimini), in adultery with his brother Paolo, he killed them both with his own hands.
- Gardner, Edmund (1913). "House of Malatesta". In Herbermann, Charles. Catholic Encyclopedia. New York: Robert Appleton Company.
to the Papal States
| Lord of Pesaro
Pandolfo I Malatesta