The Hattori clan were powerful gokenin (an immediate vassal of the shogunate in the Kamakura and Muromachi through Edo periods) with bases in Hattori-go, Ae-gun County, Iga Province (present-day Iga City, Mie Prefecture), and dominated the northern part of Iga Province, such as Ae -gun County and Yamada-gun Country (Iga Province).
服部氏は伊賀国阿拝郡服部郷（現三重県伊賀市）を拠点とする有力御家人であり、阿拝郡・山田郡(伊賀国)など北伊賀を支配下に置いていた。