he was the imagawa clan , a branch family of the kira clan which was a cadet family of the ashikaga clan whose ancestor was minamoto no yoshikuni , a son of minamoto no yoshiie who was chinju-fu shogun (commander-in-chief of the defense of the north ) and the head of the kawachi-genji clan (minamoto clan ), a branch family of the seiwa-genji (minamoto clan ). 家系は清和源氏の一家系 河内源氏の棟梁 鎮守府将軍源義家の子 源義国を祖とする足利氏の一門 吉良氏の庶家 今川氏。
generally , it is said that jimyoin-to ' s ancestors are the current imperial family; but the legitimate highbred of jimyoin-to , go-kogon ' in-ryu was extinguished after the generation of emperor shoko , son of emperor go-komatsu , and strictly speaking the direct ancestor of the imperial family is the fushimi-no-miya family , which was in the position of a cadet family (the descendant of emperor suko , suko ' in-ryu ) of jimyoin-to . 一般的に現在の日本の皇室は、この持明院統の子孫と言われているが、持明院統嫡流とされている後光厳院流は後小松天皇の子である称光天皇の代で断絶しており、厳密に言えば持明院統の分家(崇光天皇の子孫、崇光院流)と位置付けられてきた伏見宮家が現在の皇室の直接の祖先にあたる。