On 1742.02.15 it was united (as a mere title) with the residential Diocese of Pavia, but since 1819.11.19 it is again suppressed as Titular Metropolitan See.
It was united (as a mere title) with the residential Diocese of Pavia. This was on 1742.02.15. It is again suppressed as Titular Metropolitan See. This was since 1819.11.19.