Here's a look into the Christianization of the Igorots as presented during the 50th Anniversary of the Holy Rosary High School entitled: "Kayan Mission: A Brief History".

In 1665, more than a hundred years after the discovery of the Philippines by the Spaniards, a Spanish Military Expedition under the command of Admiral Pedro Duran de Monforte reached Kayan (Cayan in old records) through thick and thorns in search for gold which was believed to exist along the mountains of now named Lepanto. With them were three Agustinian friars, one of whom was Father Pedro Diaz, who settled in Kayan, hence the origin of "the Old Mission of Kayan", also known as the Mission of the Archangel Michael.

"Igorottes are still being exhibited in parts of the United States as specimen Filipinos. A group of them were not long ago on show at San Francisco. The native Filipino papers express a very natural indignation at this unfair representation of their people.

At the end of each year, in a bario in the Gran Cordillera hinterlands, people gathered in the village square for a Costume Ball, a New Year's Eve celebration that has been passed from generation to generation. While awaiting for the clock to strike at midnight, girls were crowned as village queen and princesses and thereafter were entertained with dances and songs and a parade of people from all ages in the different costumes of the Cordilleran tribal groups, the Philippine regions and other nationalities.