In "Izuna-koshiki," it is stated that the third of ten princes who did not become priest and stayed laity among eighteen princes of Myozengekko and Konpira-yasha was Izuna-chira-tengu, who is Izuna-myojin of Mt. Izuna.
この他、『飯縄講式』では妙善月光と金毘羅夜叉との間にできた十八の王子のうち、出家せず俗に留まった十王子の第三が飯縄智羅天狗で、これが飯縄山の飯縄明神であると語る。