 Roman Catholic Diocese of Ferentino

The Roman Catholic diocese of Ferentino existed until 1986, when it was united into the new diocese of Frosinone-Veroli-Ferentino.It is said, by Ferdinand Ughelli, that in the time of Emperor Constantine, in the 1st third of the fourth century, Ferentino had its own bishop; but the first bishop known by name is Bassus, at the end of the 5th century.