The disputed land of Toshima was part of the territory of the Toshima clan, whose location has not been specified but is presumed to have been around Horinouchi, Adachi Ward, Minami-hirayamagi, Kawaguchi City, or Oku, Arakawa Ward.
豊島庄犬食名は豊島氏の所領であり、正確な場所は不明だが、足立区堀之内、川口市南平柳、荒川区尾久あたりと推定される。