Etymology and distribution of 白岩.

Shiraiwa 【白岩】^{レベル5
About 10,200}  The Japanese surnames etymology dictionary.

Fukushima-ken Souma-shi , Hyougo-ken .

① Fukushima-ken Souma-shi Born of Tateya. A place name with a record in the notation of "Well" during the Warring States Period.

② There is an example of using a "valley" for a store of a shop name.

③ Kumamoto-ken Ashikita-gun Ashikita-machi Origin Tachikawa. A place name with a record since the Edo period. Tachikawa's "Stand" is used. The pronunciation is Tachitani.

Shiroiwa 【白岩】^{レベル5
About 10,200}  The Japanese surnames etymology dictionary.

立山 Tateyama reference.