Yoshinori Nitta was born in Japan. Records show him to be the son of Yoshimune alias Yoshisuke.
Together with Yukitomo Date and others Yoshinori Nitta raised an army of loyalists at Mutsu (northern Japan) and fought the Soma Clan at Reizan (1375). He waged a successful battle against Ujimitsu Ashikaga, governor-general of Kanto and followed up his success to Shirakawa (1396). He is recorded to have been killed by Mitsukane Ashikaga at Sokokura in Sagami (Kanagawa Prefecture).