After the Jokyu War, although Nobutsuna SASAKI was appointed as Jito (estate steward) there, both Enryaku-ji Temple and Shimogamo-sha Shrine decided to rebel against him: Enryaku-ji Temple established Kojo-seki (a checkpoint on the lake) at Katata to keep non-Enryaku-ji-temple ships away and Shimogamo-sha Shrine guaranteed economic and traffic privileges of Katata by protecting fishery and navigation rights for fishermen and shipowners of Katata.
承久の乱後、佐々木信綱が現地の地頭に任じられたが、延暦寺・下鴨社ともに対抗するために延暦寺は堅田に湖上関を設置して他所の船を排斥し、下鴨社は堅田の漁民・船主に漁業権・航行権（水上通行権）を保障する事で堅田の経済的・交通的特権を保証した。