Because his son Munesue, Muneto OBU, and so on served the Minamoto clan in Obu, the territory in the Kanto region, and he was one of the Minamoto clan, he was saved and allowed to join gokenin (an immediate vassal of the shogunate in the Kamakura and Muromachi through Edo periods).
子の宗季、飯富宗遠らが関東の領地飯富にあって源氏に仕えていたことや源氏の一族であったことから一命を助けられ御家人の列に加わることを許された。