Etymology and distribution of 雨安.

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

Hiroshima-ken , Hokkaidou , Oosaka-fu .

Originated from Tokushima-ken (formerly Awa). In the Asuka period there is a place name with a record of "Millet".

② Mie-ken Iga-shi Origin of Uwa and Shimawa. A place name with a record since the Kamakura period. It was in Azuchi Momoyama period in the same place.