During the next few decades, the city's political status -and the family's fortunes- remained unpredictable. The son of Giovanni I, Anton Galeazzo (or Antongaleazzo, c. 1385-1435), was a lecturer in civil law who briefly assumed power in Bologna in 1420, but was quickly overthrown. He became a condottiero, and was assassinated by papal officials on 23 December 1435 due to fears over his growing power (he had returned to Bologna in December). During his reign the Bentivoglio received the fief of Castel Bolognese.