The name of the household was derived from the residence of the founder, Imperial Prince Moriyoshi inherited from his maternal grandfather FUJIWARA no Sanehito located at Kamigyo Itsutsuji (today's Kamigyo Ward, Kyoto City.)
宮号は初代・守良親王が外祖父・藤原実仁より相続した館が、上京五辻（現　京都市上京区）にあったことに由来する。