The Mother of all Churches, Cathedrals and Basilicas of the Philippines. The Manila Cathedral-Basilica is the Premier Church of the Philippines because of all the Churches in the archipelago, it was the one chosen to become the Cathedral in 1581 when the Philippines was separated from the Archdiocese of Mexico and became a new diocese with its episcopal seat in Manila. As the Church of Manila, it was established by the secular priest Juan de Vivero in 1571 under the patronage of Mary, La Purissima e Inmaculada Concepcion. Fr. Vivero was given the special privilege and sole faculty by the Archbishop of Mexico to take care of the spiritual welfare of the new Philippine colony.
http://manilacathedral.com.ph/about_us