 In 1342 the phrase 'Bishop of Cerenzia and Cariati' was coined, after the new effective seat, and in 1437[4], Pope Eugenius IV formally erected a Diocese of Cariati, immediately placing it in personal union ("aeque principaliter") with the old see of Cerenzia.Given the decay of Cerenzia and its episcopal palace, when the Council of Trento imposed on all bishops a fixed residence, Cariati at sea, despite its exposure to Ottoman Turkish raids, was chosen over sickly isolated Cerenzia.A pest epidemic in 1528 caused the town of Cerenzia and its five parishes to be abandoned, losing its diocesan archive.