After the capture of Rome by Belisarius in 536, during the first siege of the city (537-538), Pope Silverius was deposed and sent into exile by Belisarius, and the clergy made to elect Vigilius in his place. Some accounts (Liberatus, Liber Pontificalis) accuse Vigilius of promising the Empress Theodora that he would support Monophystism in order to gain the papal throne. Procopius says that Silverius was deposed because he had collaborated with the Goths.