The Rokkaku clan was a samurai family (shugo guar feudal lord) descended from the Sasaki clan of Uda-Genji (Uda-Gen clan) and whose influence was centered in the southern part of Omi-no-kuni from the Kamakura era through the Sengoku period (Japan).
六角氏（ろっかくし）は宇多源氏佐々木氏の流れを汲む、鎌倉時代から戦国時代(日本)にかけて近江国南部を中心に勢力を持った武家（守護大名）。