According to "Banna-ji Nitta Ashikaga Ryoshi Keizu" (the genealogies of the Nitta clan and the Ashikaga clan), Yoshimune is said to have had children named Munechika NITTA and Chikasue MATSUDAIRA, and a descendant of Munechika is said to have left offspring in a line different from the Nitta Iwamatsu clan.
『鑁阿寺新田足利両氏系図』によると、義宗には新田宗親・松平親季という子があったと言い、宗親の子孫は新田岩松氏とは別の系統として子孫を残したという。