The Japanese surnames etymology dictionary.
Hiroshima-ken . Creation . From the retirement that gives away the family home. Ishikawa-ken In Wakayama-cho of Suzu-shi tells that he changed his name from a surname because he retired and retired. Estimated in the Edo period. 為乗 reference. Fukui-ken Awara-shi In Shihime tells that it was swordsmith in the Edo period.