 Bishop Carlo Francesco Ceva (1683–1700) held a synod on 13 May 1687; he held his second synod on 18–20 May 1699.On 10–12 September 1715, Bishop Giulio Resta (1701–1743) held a diocessan synod.Bishop Giovanni Negri held a diocesan synod on 6–8 September 1843.