The Gaddang are a collection of related ethnolinguistic groups in the eastern Cordillera of Luzon. While most Gaddang had converted to Christianity by 1900, a minority (around 10%) maintained their indigenous religion until the 1970s. This minority, formerly known as the 'Pagan Gaddang', was studied in detail by the ethnographer Ben Wallace in the 1960s. Since the conversion of these Gaddang to Christianity, the term 'Pagan Gaddang' has become defunct. Wallace (2013) now refers to this group as the Ga'dang, which reflects their local pronunciation of their ethonym.