Also around the same time, Sadatsuna had his daughter marry Yoshitsuna NIHONMATSU, the son of Yoshitsugu HATAKEYAMA, the castellan of the Nihonmatsu-jo Castle, to consolidate a foothold.
またこの頃、娘を二本松城主畠山義継の子・二本松義綱に嫁がせて足場を固めた。