However, without returning the position even after his younger brother reached manhood, Yasusada transferred the position to his son Shigehisa, so that he was sued in the Kamakura bakufu (Japanese feudal government headed by a shogun).
しかし弟の成人後も所職を返還せず、実子の重久に譲渡してしまったために鎌倉幕府に訴えられた。