The Tinguian or Itneg live in the western Cordillera of Luzon, the largest island of the Philippines. Headhunting played a central role in their indigenous religion - when a prominent man died, it was essential to conduct a headhunting raid to end the period of mourning that followed. Until the early twentieth century, the Christianized neighbours of the Tinguian would often fall victim to these raids. Like the other peoples of the Cordillera, the Tinguian converted to Christianity in the course of the twentieth century.