The province of Pavia is a province in the region of Lombardy in northern Italy; its capital is Pavia. As of 2015, the province has a population of 548,722 inhabitants and an area of 2,968.64 square kilometres (1,146.20 sq mi); the town of Pavia has a population of 72,205.
The Lomellina is a geographical and historical area in the Po Valley of northern Italy, located in south-western Lombardy between the Sesia, Po and Ticino rivers. It is one of three areal divisions of the Province of Pavia.

Mirabello is a suburb of Pavia, Lombardy, northern Italy. It lies north of the city, bordering San Genesio ed Uniti.

The Diocese of Novara is a Roman Catholic diocese in the Piedmont region of northwest Italy. It is a suffragan of the Archdiocese of Vercelli.
The Oltrepò Pavese is an area of the Province of Pavia, in the north-west Italian region of Lombardy, which lies to the south of the river Po. It is oltre (‘beyond’) the Po, when considered from the provincial capital Pavia and in general from the rest of Lombardy.
The Pavese is a geographical and historical area in the Pianura Padana of northern Italy, located in south-western Lombardy. It constitutes one of the 3 territories in which is divided the Province of Pavia.

The Archdiocese of Milan is a metropolitan see of the Catholic Church in Italy which covers the areas of Milan, Monza, Lecco and Varese. It has long maintained its own Latin liturgical rite, the Ambrosian rite, which is still used in the greater part of the diocesan territory. Among its past archbishops, the better known are Saint Ambrose, Saint Charles Borromeo, Pope Pius XI and Saint Pope Paul VI.
The Italian Catholic Diocese of Lodi has existed since the fourth century, and is a suffragan of the Archdiocese of Milan.

The Diocese of Pavia is a see of the Catholic Church in Italy. It has been a suffragan of the Archdiocese of Milan only since 1817. Previous to the reorganization of the hierarchy in northern Italy by Pope Pius VII after the expulsion of the French and the Congress of Vienna, the diocese of Pavia had depended directly upon the Holy See, despite repeated failed attempts on the part of the Archbishops of Milan to claim control. The diocese has produced one Pope and Patriarch of Venice, and three cardinals.

The Italian Catholic Diocese of Piacenza-Bobbio has existed since 1989. In northern Italy, it is a suffragan of the Archdiocese of Modena-Nonantola. The historic Diocese of Piacenza was combined with the territory of the diocese of Bobbio-San Colombano, which was briefly united with the archdiocese of Genoa.

The Diocese of Tortona is a Roman Catholic ecclesiastical territory in northern Italy, spanning parts of three regions of Piedmont, Lombardy and Liguria. It is a suffragan of the Archdiocese of Genoa and forms part of the ecclesiastical region of Liguria. The diocese claims to be one of the oldest in Lombardy and the Piedmont.

The Italian Catholic Diocese of Vigevano lies almost entirely in the Province of Pavia, Lombardy. It has existed since 1530. The diocese is suffragan of the Archdiocese of Milan, having been suffragan of the Archdiocese of Vercelli until 9 April 1578.