His descendants became known as the Watanabe clan, who served in the Takiguchi-no-Musha Imperial Palace guards and, as warriors from Settsu Province based at the sea of Sumiyoshi Ward (Suminoe) (Osaka Bay), were in charge of the Seto Inland Sea navy, flourishing from the Genpei War to Northern and Southern Courts period.
その子孫は渡辺氏と呼ばれ、内裏警護に従事する滝口武者として、また摂津国の武士団として住吉区（住之江）の海（大阪湾）を本拠地として瀬戸内海の水軍を統轄し、源平の争乱から南北朝にかけて活躍した。