WATANABE no Tsuna became a retainer of MINAMOTO no Yorimitsu of Settsu-Genji (the Minamoto clan based in Settsu), who was the brother of the wife of MINAMOTO no Atsushi, Tsuna's father-in-law.
渡辺綱は義父の源敦の妻の兄である摂津源氏の源頼光の郎党となった。