The Seki clan in Nakayama, Gamo County (present Nakayama, Hino Town, Gamo County, Shiga Prefecture) had been a daimyo who assumed the lord of the Kameyama-jo Castle in the Ise Province and the lord of the Kurosaka-jo Castle in the Hoki Province.
蒲生郡中山（現・蒲生郡日野町(滋賀県)中山）の関氏は、伊勢国亀山城主や伯耆国黒坂城主を歴任した大名であった。