Who are the narrator of the story of hudhud hi aliguyon?

Aliguyon and Pumbakhayon became good friends, as peace between their villages flourished. When the time came for Aliguyon to choose a mate, he chose Pumbakhayon's youngest sister, Bugan, who was little more than a baby. He took Bugan into his household and cared for her until she grew to be most beautiful. Pumbakhayon, in his turn, took for his wife Aliguyon's younger sister, Aginaya. The two couples became wealthy and respected in all of Ifugao.