Ferdinando Ughelli, without any documentary proof, claims the Diocese of Bagnorea was joined to the Diocese of Viterbo on 4 February, 1449, but neglects to mention when they were reestablished as separate dioceses.
Luigi Ferdinando Marsigli | Ferdinando Stanley, 5th Earl of Derby | Ferdinando Paer | Ferdinando I de' Medici, Grand Duke of Tuscany | Ferdinando Gorges | Pier Ferdinando Casini | Ferdinando Martini | Ferdinando Fairfax, 2nd Lord Fairfax of Cameron | Ferdinando Ughelli | Ferdinando Sarmi | Ferdinando de' Medici | Ferdinando d'Adda | Carlo Ferdinando Landolfi | San Ferdinando | Francesco Ferdinando d'Avalos | Ferdinando Paƫr | Ferdinando III de' Medici | Ferdinando II de' Medici, Grand Duke of Tuscany | Ferdinando Gliozzi | Ferdinando Gentile | Ferdinando Fairfax | Ferdinando de' Medici, Grand Prince of Tuscany | Ferdinando de' Medici, Grand Duke of Tuscany | Ferdinando d' Aragona y Guardato, 1st Duke of Montalto | Ferdinando Carulli | Cardinal Ferdinando de' Medici |
The first bishop known to have occupied this see was Menardus, a native not of Padua, Ferdinando Ughelli believed, but of Poitiers, which Vitale has shown.