Among the genealogies of The Tale of Genji, in which characters in "The Tale of Genji" were systematically written in the form of genealogy as if they were the real people, Genji monogatari kokeizu (old genealogies on the Tale of Genji) refers to the ones that were made before the genealogy produced by Sanetaka SANJONISHI.
源氏物語古系図（げんじものがたりこけいず）とは、『源氏物語』の登場人物を実在の人物と同様に系図の形式で書き表した源氏物語系図（げんじものがたりけいず）のうち、三条西実隆が整えたとされるもの以前のものをいう。