Etymology and distribution of 小巖.

Koiwa 【小巖】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Tochigi-ken Ootawara-shi , Ibaraki-ken , Hokkaidou . Terrain . From Sakura and Oka. Tochigi - ken Ootawara - shi In Kitayakihisaku tell the fact that Mr. Kunii, who lost in the southern dynasty during the South - North and Morning era, retired and renamed for camouflage. 国井 Kunii reference. Iwate-ken Miyako-shi In Kawai Iwate-ken Miyako-shi There is a transmission from the cherry blossoms of Oka and the Oka. Hokkaidou Iwamizawa-shi In Kitamura Toyotomi family crest is a cherry blossom with a circle Iwate-ken Miyako-shi There is a tradition of having a box stone. Ibaraki-ken Kuji-gun Daigo-machi It was in Edo era in Fukuroda.