Sama no kami was the head of the Meryo government office of harnesses and horses in Mimaki ranch that controlled the war horses of the Imperial court; however, Yoshitomo was in this position before the Heiji-no-ran War.
左馬頭は宮中の軍馬を管理する馬寮の長官であり、平治の乱以前は義朝が務めていた。