It is said that, Shigekata YOSHIDA (also called Tarozaemon, Kozukenosuke, Izumo no kami (chief of Izumo Province), his title was Doho)(1463 - 1543) was a retainer of the Rokkaku clan which was a daimyo of the Minami Omi region during the Sengoku Period, and it is also said that Shigekata YOSHIDA based his activities around Kawamori Castle (present day Kawamori, Ryuo-cho).
吉田重賢（太郎左衛門・上野介・出雲守など、号：道宝）（寛正4年（1463）-天文(元号)12年（1543））は南近江の戦国大名六角氏家臣で、川守城（現竜王町川守）を本拠としていたと伝わる。