The first waves of Ilocanos found their way to Hindol, which was later called Sindol, and less than the kilometers south of Sindol was the place called Bobulon. Hindol was a Zambal Aeta name of a tree than abundant in the place. Bobulon was also a kind tree then abundant at the Public Plaza. However, there was another version why it was called Bobulon. It was said that the first voyage of Ilocano settlers had all the favorable wind ( bulon ) from Paoay, Ilocos Norte to this village. The other waves of Ilocano settlers, who were mostly merchants and fishermen, came from Vigan and San Vicente, Ilocos Sur.