The noble families that branched from the Koga family include, besides Kuze family, eight families: the Nakanoin family, Rokujo family (Murakami Genji), the Iwakura family, the Chigusa family, the Higashikuze family, the Umetani family, the Otagi family and the Uematsu family.
久我家から分岐した公家諸家としては、久世家の他に中院家、六条家六条家（村上源氏）、岩倉家、千種家、東久世家、梅渓家、愛宕家、植松家の8家がある。