 The Cathedral of Santa Maria Assunta in Venice is based on the eleventh century site known as "La Canonica" and was dedicated in 1119 by the archbishop of Pisa.The diocese was connected with the archdiocese of Genoa and the bishoprics of Accia and Nebbio.It remained the seat of the bishop of Mariana from 1269 to 1440, when it was moved to Vescovato Cathedral.