Roman Catholic Diocese of California
The Roman Catholic Diocese of California, also called the Diocese of the Californias or Diocese of Two Californias, is a former residential episcopal see that existed during 1840–1849, covering the Californias (including both Alta California and Baja California). After the Mexican–American War, the American portion became the Diocese of Monterey in California, while the Mexican portion was eventually reorganized into the Diocese of Tijuana. In 1996, the title was revived as a titular see of the Catholic Church. Residential see. Pope Gregory XVI set up the Diocese of California with the papal bull "Apostolicam  sollicitudinem" of 27 April 1840. He assigned to the new diocese a vast territory taken from that of the Diocese of Sonora, now the Metropolitan Archdiocese of Hermosillo, in Mexico. It included Alta California (corresponding to the present-day American states of California, Nevada, Arizona, Utah, western Colorado and southwestern Wyoming) and the Baja California Territory (the modern Mexican states of Baja California and Baja California Sur). He set the episcopal residence at San Diego and made the diocese a suffragan of the Archdiocese of Mexico City. After the Mexican–American War, Alta California became United States territory and the  Holy See divided the American diocese into US and Mexican sections. On 20 November 1849, with the episcopal residence moved to Monterey, a more central position for the new diocese, the bishopric was formally suppressed, with two successor jurisdictions: The Residential Ordinaries were: Titular see. The diocese was nominally restored as Latin Titular bishopric of "California or Both Californias" in English, "Ambas Californias" in Spanish, or "Californiensis" in Latin. It has had following incumbents, so far of the fitting Episcopal (lowest) rank :