The former Italian Catholic Diocese of San Severino, in the Province of Macerata, Marche in Central Italy, existed until 1986.
[1] His nephew Antonio paid with his life for attempting to resist the arms of Pietro Colonna, the representative of Pope Martin V; his sons tried in vain to recapture the city (1434), which remained immediately subject to the Holy See.
[1] On 26 November 1586, by the Bull Superna dispositione, Pope Sixtus V made San Severino an episcopal see,[3] a suffragan of the Archbishop of Fermo.
[5] In 1913, the diocese of Treia was removed from the supervision of the Archbishop of Camerino and assigned donec aliter provideretur, to Bishop Adam Borghini of San.
[10] On the same day the diocese of San Severino was united permanently with the Archiocese of Camerino, under the new title Archidioecesis Camerinensis-Sancti Severini in Piceno.