닛타 요시사다
was the Constable ("shugo") of Echizen Province during the 14th century Nanboku-chō Wars in Japan. He acted to block the northward progress of Nitta Yoshisada, who supported the Emperor's Southern Court against the "shōgun"s Northern Court. Shiba, in his role as Constable, served the "shōgun" and thus the Northern Court.