The first known bishop of Gravina is Leo; other bishops of note are: Samuele (1215), who built at his own expense the church of the Madonna di Altamura, afterwards an archipresbyterate "nullius" (i.e. exempt from the jurisdiction of the neighbouring bishop); Giacomo II (1302), who replaced the Greek rite with the Latin (Roman Rite) by order of the Archbishop of Acerenza; Vincenzo Giustianiani (1593), a Genoese nobleman, who founded the seminary, the church of the Madonna delle Grazie and the Capuccinelle convent; Domenico Cennini (1645), who built the episcopal residence; Fra Domenico Valvassori (1686), a patron of learning and founder of an "Accademia Teologica".