The Mikohidari family was one of the principal families of the Fujiwara clan, whose founder was FUJIWARA no Nagaie, the sixth son of FUJIWARA no Michinaga of the Northern House of the Fujiwara clan.
御子左家（みこひだりけ）は、藤原北家藤原道長の6男藤原長家を祖とする藤原氏の嫡流。