According to local tradition, Suwa-myōjin, a god who came from outside Suwa, fought against local gods who resisted his entry into the region such as Moreya.
Other claimed ancestors of the clan include the Emperor Kanmu - via a supposed son named Arikazu who became the priest of Suwa-myōjin (see 'As ōhōri section below) - or the Seiwa Genji via Minamoto no Mitsuyasu (one of the sons of Minamoto no Tsunemoto) [REF].