Io' of Ioto no miya refers to "Anshitsu," i.e. a humble cabin, which a person who lives a life aloof from the affairs of the world such as a person of refined taste, or a priest uses at work, or refers to a camp for controlling the army (adapted from "Wamyoruiju-sho" [famous Heian-period Japanese dictionary]), so that Ioto no miya is believed to be derived from the residence of Emperor Korei who was literally the governor of the government.
庵戸宮の「庵(廬)」とは、風流人など浮世離れした者や僧侶が執務に用いる質素な佇まいの小屋である庵室を指したり、あるいは軍隊を管理する陣営を指す（歴史辞書『和名類聚抄』）ことから、文字通り政権の統括者である孝霊天皇が暮らした住まいに由来するものといわれている。