Bishop Gianfrancesco Gandolfo (1623–1633) negotiated the peace between Savoy and Genoa, which was proclaimed on 10 August 1634.

[3] The diocese of Ventimiglia had been reduced to only thirty-six parishes: two in Monaco, nineteen in the domains of the House of Savoy, and fourteen in the Republic of Geneva.

[6] On 5 April 1806, at the demand of Bonaparte, now Emperor Napoleon I, Pope Pius VII issued the Bull Expositum cum nobis, by which the diocese of Ventimiglia was removed from the metropolitanate of Milan, and made a suffragan of the Archdiocese of Aix.

[7] On 30 May 1818, however, Pope Pius VII, in the Bull Sollicitudo omnium ecclesiarum, returned Ventimiglia to Italian control, in the form of the House of Savoy, which had been restored to the expanded Kingdom of Sardinia (the King was also Doge of Genoa), and assigned the diocese to the metropolitanate of Genoa.

[8] On 10 July 1886, the small parish of Garavano, which had fallen into French territory, was transferred by agreement between the Bishop of Ventimiglia and the Bishop of Nice from the diocese of Ventimiglia to the diocese of Nice; the transfer was approved by Pope Leo XIII.

A diocesan synod was held by Bishop Domenico Vaccari (1502–1511), in which the subject of witches and the procurement of abortions figured prominently.

[16] The Chapter of the Cathedral of S. Maria Assumpta consisted of three dignities (the Provost, the Archdeacon and the Cantor) and eight Canons.

They were also granted the right of presentation of suitable persons to the churches and chapels in the diocese in their possession.

When some of the villagers, however, refused to pay, the bishop sent his procurators to collect his due portion; the Chapter complained, wishing to observe the old custom, but the bishop demanded a fee for his services; when the Chapter tried to collect the dues on their own, the villagers refused to hand them over.