His father Yoshishige NITTA handed over Serada District, Nitta County (Nitta no sho estate), Kozuke Province (present-day Oaza Serada, Ojima-machi is the name of the place adjacent to the north of Tokugawa) to Yoshisue, who then became the estate steward, Jito, of Serada District.
父新田義重からは上野国新田郡（新田荘）世良田郷（現在の尾島町大字世良田は徳川に北隣する地名である）を譲られ、世良田郷の地頭となった。