The Sanjonishi Family is a house of a branch line of the House of Ogimachi-Sanjo, of the Kanin Line, of the House of Fujiwara North of the Fujiwara clan, as well as a court noble having the house status of the house of Minister (Old houses, or Uchiuchi).
三条西（さんじょうにし）家は、藤原氏藤原北家閑院流の正親町三条家の分家で、大臣家（旧家、内々）の家格を有する公家。