Etymology and distribution of 天海.

Amagai 【天海】^{レベル4
About 1,400}  The Japanese surnames etymology dictionary.

Kumamoto-ken , Aichi-ken , Fukuoka-ken .

① Kumamoto-ken Arao -shi birth of Arao. A place name with a record since the Warring States Period.

② Aichi-ken Toukai-shi Origin of Arao-cho. A place name with a record since the Kamakura period.

③ Convention . Abbreviation of Aratani. Hiroshima-ken Kure-shi In Tobara- machi, tell her that descendants of Mr. Aratani of the same place left "rough". Meiji New Last name in estimation. 荒谷 Aratani reference.

Amakai 【天海】^{レベル4
About 1,400}  The Japanese surnames etymology dictionary.

Gunma-ken Oota-shi , Ishikawa-ken Kanazawa-shi , Toyama-ken . Terrain . From the stormy river. 荒井 There is surname. 荒井 Arai reference. Tochigi-ken tells Shiobara who had been living in the Kamakura period in Nasushiobara-shi . 塩原 Shiohara reference.

Amami 【天海】^{レベル4
About 1,400}  The Japanese surnames etymology dictionary.

Toyama-ken , Shiga-ken .

① Wakayama-ken Kinokawa-shi The birth of Wakayama . A place name with a record since the Kamakura period. The place name was also written as "saw watching."

② Heteromorphism of 荒海 . 荒海 Araumi reference.