In 1239, Cardinal Giacomo da Pecorara, suburbicarian Bishop of Palestrina, was sent by Pope Gregory IX to France as papal legate, to deal with the Albigensian heresy.
[6] The cathedral was served and administered by a corporation called the Chapter, which, at Noli, was composed of one dignity (the Archpriest) and five canons.
[7] When Noli was joined with Savona in 1820, the Chapter of Nola consisted of the Archpriest, the Dean, the Theologus, the Penitentiary, and four other canons.
[10] On 11 August 1247, Pope Innocent IV wrote to the archbishop of Genoa, informing him that the people of Noli were demanding a bishop of their own.
Bishop-elect Guglielmo had already ceased to govern Noli, but had been appointed administrator in spiritual and temporal matters.
Bishop Trucco therefore wrote to Pope Gregory XIII, proposing that the episcopal seat be moved inside the city, to the church of S. Pietro.
In an apostolic letter dated 22 October 1572, the pope granted the bishop's petition and authorized the transfer.