On October 1, 1196, MINAMOTO no Yoritomo gave Tadasue 25 territories in Onyu and Mikata Counties, which were confiscated from Tokisada INABA, who was the most influential local official in Wakasa Province.
建久7年（1196年）9月1日、源頼朝は若狭国内の最有力在庁官人であった稲庭時定より没収した遠敷・三方郡両郡の所領25か所を忠季に与えた。