That winter he visited Rome, where he was recognized as Emperor and crowned on 17 January 1328, with the staunch and vocal opposition of the Guelph party.

Nicholas appointed seven cardinals, and attracted the bishops of Milano, Cremona, Como, Ferrara, Savona, Albenga, Genoa, Pisa, Lucca, Pistoia, Volterra, Arezzo, Borgo Sansepolcro, Bologna, Città di Castello, Viterbo, Todi, Bagnorea, Camerino, Osimo, Fermo, Urbino, Jesi, Fabriano, and Matelica to his schism.

In addition, in a letter of 25 January 1329, the Pope continued Bishop Giovanni in his office of Inquisitor of the March of Ancona, authorizing his powers to extend far beyond the diocese of Senigallia.

[11] The schism began to dissipate with the departure of Louis IV for Germany in April 1329, and then the surrender of Nicholas V to papal authorities in August 1330.

[12] From time immemorial, the bishops of Senigallia had been directly subordinate (suffragans) of the Holy See (Papacy), with no supervisory archbishop intervening.

In his bull Super universas of 4 June 1563, Pope Pius IV reorganized the administration of the territories of the March of Ancona by creating a new archbishopric by elevating the bishop and diocese of Urbino.

He created the new ecclesiastical province of Urbino, which was to include the dioceses of Cagli, Pesaro, Fossombrone, Montefeltro, Gubbio, and Senigallia.

On 11 March 2000, by virtue of the Bull Quo maiori, Pope John Paul II created the new ecclesiastical province of Ancona-Osimo, and assigned it the dioceses of Fabriano-Matelica, Jesi, Loreto, and Senigallia[14] In 1417, galleys and troops supplied by Galeazzo Malatesta of Pesaro and Carlo Malatesta of Rimini attacked Senigallia, as part of their plan to dominate the entire March of Ancona, and, with intermissions, held it under their control.

In 1682, when Senigallia was under the direct temporal dominion of the Holy See (Papacy), the cathedral of S. Pietro was served by a Chapter composed of three dignities and seventeen Canons.

The remaining ten, called Locatelli, were elected by the Council and Senate of the city, from the members of the nobility.

[21] Bishop Pietro Ridolfi (1591–1601) presided over a diocesan synod held in the cathedral on 4 May 1591; its decrees were published.