The Roman Catholic Archdiocese of Florence, also called the Archdiocese of Firenze, is an ecclesiastical territory or diocese of the Roman Catholic Church in Italy. Founded in the 1st century and elevated to the dignity of an archdiocese on May 10, 1419, its motherchurch is the Basilica di Santa Maria del Fiore, which has as its pastor the Archbishop of Florence. In some Christian churches, the diocese is an administrative territorial unit governed by a bishop, sometimes also referred to as a bishopric or episcopal see, though more often the term episcopal see means the office held by the bishop. ... The Roman Catholic Church is the largest religious denomination of Christianity with over one billion members. ... (1st century BC - 1st century - 2nd century - other centuries) The 1st century was that century which lasted from 1 to 99. ... In some Christian churches, the diocese is an administrative territorial unit governed by a bishop, sometimes also referred to as a bishopric or episcopal see, though more often the term episcopal see means the office held by the bishop. ... May 10 is the 130th day of the year in the Gregorian Calendar (131st in leap years). ... Events January 19 - Hundred Years War: Rouen surrenders to Henry V of England which brings Normandy under the control of England. ... A motherchurch or mother church in Christianity is used in three forms. ... A pastor is the head minister or priest of a Christian church. ...