Roman Catholic Diocese of Great Falls–Billings

The Diocese of Great Falls–Billings is one of two Catholic dioceses in the U.S. state of Montana in the United States. The diocese was established in 1904, and formerly constituted the eastern half of the Diocese of Helena. The see was originally located only in the city of Great Falls, Montana, from which the diocese drew its original name. In 1980, the diocese's name was changed to reflect its new co-see in the city of Billings, Montana.

Pope Pius X erected the "Diocese of Great Falls" on May 18, 1904, by dividing the Diocese of Helena, which previously comprised the entire state. For its first 76 years, it was called the "Diocese of Great Falls" . Bishop Thomas J. Murphy changed the name of the diocese on February 14, 1980, adding "Billings" and changing the way that "Great Falls" was translated into Latin. The diocese has two cathedrals: St Ann's Cathedral in Great Falls, which was dedicated on December 15, 1907, and St Patrick's Co-Cathedral in Billings, which was dedicated on March 1, 1908. The co-patrons of the diocese are Saint Matthias, whose feast day is May 14 and who was the patron saint of the first diocesan bishop, and Saint Pius X, whose feast day is August 21 and who, while pope, erected the diocese.

Wikipedia