One of the remotest barangays of Cabugao is Nagsincaoan. This barangay is located in the eastern most part of the town. It is only a kilometer away from the mountain ranges of Cordilleras.
When this place was still a forest, people of the suburbs went to that place to secure wooden materials like yoke and other farm implements which are abundant to this particular place. The yoke is a very important farm implement used for carabaos and bullcarts, termed in native tongue sincao, hence, this place is called Nagsincaoan.
Eastern Rebba is one of the sitios of Nagsincaoan; the turning of a forest to cultivated land is what we call in the native tongue rebba. This newly-inhabited sitio of Nagsincaoan is part of the barangay proper. It is located at the foot of the Cordillera Mountain. The fertility of its soil encourages the settlers to build their houses at this place.
The barangay is prominent for it is the home of cultural minorities the Tingguians. With the incessant teaching of Christianity from the time of the Spaniards gaining a foothold on the Philippine shore up to the present, a greater percentage of this barangay populace has turned to Christianity. Nowadays, people who dwell here are intermittently following the stream of modern life.