His ancestor was Tomomitsu YUKI, the descendant of FUJIWARA no Hidesato, who ruled Shimofusa no kuni (Shimofusa Province) and was of the family line of the servant of the Takeda clan, who served MINAMOTO no Yoritomo and the family of ASHIKAGA Shogun.
先祖は下総国より興きた藤原秀郷の末裔・結城朝光で、源頼朝・足利将軍家家臣を経て武田氏家臣の家柄だったという。