Etymology and distribution of 天瀬川.

Amasegawa 【天瀬川】^{レベル2
About 10}  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.