Since there was a document stating that places called Imaki, Wada, and Kojima of Misato, Kojima County were addressed as Kojima-Miyake, one of directly-controlled territories of the Imperial Court, the descendants of Amenohiboko chose Miyake as their family name.
又、児島郡三郷の今木・和田・児島はかつて朝廷直轄領である児島屯倉と呼称したという資料のあることから、天之日矛の後裔が三宅を本姓としたという。