Etymology and distribution of 岩明.

Iwaake 【岩明】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Fukushima-ken , Kagawa-ken .

① Shiga-ken Gamou-gun Ryuuou-chou Introduction of Ukawa. A place name with a record since the Edo period.

② Ishikawa-ken Housu-gun Noto-chou Origin of the Unkawa. A place name with a record since the Kamakura period. Ishikawa-ken Komatsu-shi Ukawa Town is a place name with a record in the notation of "Ugawa" in the Heian era.

③ Korea type . A variant of 烏川 . Hyougo-ken Ashiya-shi has a record of naturalization on June 26, 1963. Zheng the real name. 鄭 Tei reference.