Pope Clement VII had been kept as…
October 1528 CE
Pope Clement VII had been kept as a prisoner in Castel Sant'Angelo for six months after the Sack of Rome in 1527.
After buying off some Imperial officers, he had escaped disguised as a peddler, taking shelter in Orvieto and then in Viterbo.
He returns to a depopulated and devastated Rome only in October 1528.