On April 28, 1934, Pope Pius XI promulgated an apostolic constitution with the incipit Romanorum Pontificum semper separating the dioceses of Cebu, Calbayog, Jaro, Bacolod, Zamboanga and Cagayan de Oro from the ecclesiastical province of Manila.
On April 28, 1934, Pope Pius XI issued an apostolic constitution titled "Romanorum Pontificum semper" which separated the dioceses of Cebu, Calbayog, Jaro, Bacolod, Zamboanga and Cagayan de Oro from the ecclesiastical province of Manila.