Tingguians refers today to the mountain-dwelling people of Abra, Ilocos Sur, and Ilocos Norte. The name may have been derived from the term “tingue” or “tinggi”, which means mountaineers or mountains. Tingguian, then, refers to “The People of the Mountains” as used during the early Spanish period living in places such as Basilan, Bohol, Zambales and Mindanao which later was used exclusively to the ethnic groups living in northern Luzon.
Today, the Tingguian group is divided into two, the “valley Tingguian”, occupying the village communities where there are also Ilocano settlers, and the “mountain Tingguian”, distributed in sparsely populated areas in highland regions of northern and eastern Abra. (Tingguian | Wikipilipinas)