Etymology and distribution of 小岩.

Koiwa 【小岩】^{レベル5
About 7,700}  The Japanese surnames etymology dictionary.

Hiroshima-ken , Shimane-ken , Nagasaki-ken .

① Topography . 笹田 's variant. Hiroshima-ken Fukuyama-shi Marunouchi was in the Edo period in the Sakura Samurai of the Clan Office, Chiba-ken Sakura-shi Castle town in the post-Bing Fukuyama clan of the clan office.

② Abstract . Synthesis of Sasaki and Tamura. Shimane-ken Hamada-shi As Mr. Nako is a descendant of Mr. Sasaki in Asahimachi Kida, he tells that he called "Sas" and his spouse Mr. Tamura from "Edo" during the Edo period. 尼子 Amako reference. 佐々木 Sasaki reference. 田村 Tamura reference.

Oiwa 【小岩】^{レベル5
About 7,700}  The Japanese surnames etymology dictionary.

Hiroshima-ken Hiroshima-shi Saeki-ku. Last name including "back", name of male including "Akira".