 Its purpose was (1) to proclaim generally the various decrees already issued by the bishop; (2) to discuss and ratify measures on which the bishop chose to consult with his clergy; (3) to publish statutes and decrees of the provincial synod and of the Holy See.In May 1435 Bishop Enrico Rampini di Sant'Allosio presided over a synod held in the church of S. Domenico in Tortona.A diocesan synod was held in 1595 by Bishop Maffeo Gambara (1592–1612).