Shouji 【障子】3 The Japanese surnames etymology dictionary.
Fukushima-ken Shirakawa-shi . Creation . In Fukushima-ken , I tell you that I changed my name in the meaning of "to overlap" from the Iwamatsu family name in the eastern part of Yamaguchi-ken (formerly Sukhaku). Estimated in around the Warring States Period. Fukushima-ken Tamura-gun Miharu-machi Omachi was in the Edo period in the Miharu clan of the Clan office. 岩松 reference.