After the death of Pope Lando in 914, a faction of the Roman nobility, headed by Theophylact of Tusculum, summoned John to Rome to assume the vacant papal chair. Although this was again interpreted by Liutprand as Theodora personally intervening to have her lover made pope, it is far more likely that John’s close working relationship with Theophylact, and his opposition to the ordinations of Pope Formosus, were the real reasons for his being transferred from Ravenna to Rome. Since switching sees was considered an infraction of canon law, as well as contravening the decrees of the Lateran Council of 769, which prohibited the installation of a pope without election, John’s appointment was criticised by his contemporaries. Nevertheless, whilst Theophylact was alive, John adhered to his patron’s cause.