The Watanabe Totō (渡辺徒党, Watanabe clique) was, according to historical records, the offspring of Natsuuranohisa, a person of Minamoto lineage, who prospered in the Land of Yasugasettsu (known today as Osaka). Since they dominated the lower regions of the Yodo River, they possessed a marine force and took part in the Genpei battles.[1]