Patriarch of Venice in the context of "St Mark's Basilica"

The Patriarchal Cathedral Basilica of Saint Mark (Italian: Basilica Cattedrale Patriarcale di San Marco), commonly known as St Mark's Basilica (Italian: Basilica di San Marco; Venetian: Baxéłega de San Marco), is the cathedral church of the Patriarchate of Venice; it became the episcopal seat of the Patriarch of Venice in 1807, replacing the earlier cathedral of San Pietro di Castello. It is dedicated to and holds the relics of Saint Mark the Evangelist, the patron saint of the city.

The church is located on the eastern end of Saint Mark's Square, the former political and religious centre of the Republic of Venice, and is attached to the Doge's Palace. Prior to the fall of the republic in 1797, it was the chapel of the Doge and was subject to his jurisdiction, with the concurrence of the procurators of Saint Mark for administrative and financial affairs.

Pope John XXIII (born Angelo Giuseppe Roncalli; 25 November 1881 – 3 June 1963) was head of the Catholic Church and sovereign of the Vatican City from 28 October 1958 until his death on 3 June 1963. He is the most recent pope to take the pontifical name "John".

Roncalli was among 13 children born to Marianna Mazzola and Giovanni Battista Roncalli in a family of sharecroppers who lived in Sotto il Monte, a village in the province of Bergamo, Lombardy. He was ordained to the priesthood on 10 August 1904 and served in a number of posts, as nuncio in France and a delegate to Bulgaria, Greece and Turkey. In a consistory on 12 January 1953 Pope Pius XII made Roncalli a cardinal as the Cardinal-priest of Santa Prisca in addition to naming him as the Patriarch of Venice. Roncalli was unexpectedly elected pope on 28 October 1958 at age 76 after Pope Pius XII's death. Pope John XXIII surprised those who expected him to be a caretaker pope by calling the historic Second Vatican Council (1962–1965), the first session opening on 11 October 1962, which is now his feast.

The Diocese of Pavia (Latin: Dioecesis Papiensis) is a Latin diocese 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 seat of the bishop is the Cattedrale di Maria Assunta e S. Stefano Protomartire in Pavia. The current bishop of Pavia is Corrado Sanguineti, appointed by Pope Francis on 1 December 2015.

The Patriarchate of Venice (Italian: Patriarcato di Venezia; Latin: Patriarchatus Venetiarum), also sometimes called the Archdiocese of Venice, is a patriarchate of the Latin Church of the Catholic Church, located in the Metropolitan City of Venice. Its episcopal seat is in the Cathedral Basilica of St. Mark in Venice.

One of only four extant patriarchates in the Latin Church of the Catholic Church, its ordinary is the Patriarch of Venice, who is traditionally created a cardinal by the pope. Immediately upon installation in office, however, the Patriarch of Venice has the right to wear scarlet vesture (like a cardinal), whether or not he has yet been elevated to the College of Cardinals.

The Basilica di San Pietro di Castello (English: Basilica of St Peter of Castello), commonly called San Pietro di Castello, is a Roman Catholic minor basilica of the Patriarch of Venice located in the Castello sestiere of the Italian city of Venice. The present building dates from the 16th century, but a church has stood on the site since at least the 7th century. From 1451 to 1807, it was the city's cathedral church, though hardly playing the usual dominant role of a cathedral, as it was overshadowed by the "state church" of San Marco and inconveniently located. During its history, the church has undergone a number of alterations and additions by some of Venice's most prominent architects. Andrea Palladio received his first commission in the city of Venice from the Patriarch Vincenzo Diedo to rebuild the facade and interior of St Pietro, but Diedo's death delayed the project.

After St Mark's Basilica became Venice's official cathedral (it had previously been the private church of the Doge), San Pietro fell into a state of disrepair. It was firebombed during the First World War and only through the efforts of conservation organisations has it been restored to its former state. Its ongoing conservation is now managed through its membership of the Chorus Association of Venetian churches.

Latin Patriarch may refer to these Catholic sees and/or titles :

• Latin Patriarch of Constantinople (suppressed)
• Latin Patriarch of Antioch (suppressed)
• Latin Patriarch of Alexandria (suppressed)
• Latin Patriarch of Jerusalem
• Latin Patriarch of Ethiopia (suppressed)

• Patriarch of Venice
• Patriarch of Lisbon
• Patriarch of the East Indies (vested in Goa)
• Patriarch of Aquileia (extinct)
• Patriarch of Grado (merged with the office of the Bishop of Castello to become the Patriarch of Venice)
• Patriarch of the West Indies (extinct)

Patriarch of Rome and all the West and Patriarch of the West are two rarely mentioned titles of the Pope. Catholicism also recognizes the patriarchs of the East, but they would never be called "Latin."