Etymology and distribution of コイン.

Koin* 【コイン】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Oosaka-fu , Ooita-ken Ooita-shi , Gunma-ken .

① variant of 佐島 . Ehime-ken Matsuyama-shi Marunouchi was in the Edo period in the Iyo Matsuyama clan of the Clan office.

② A variant of 佐藤 . In Iwate - ken Oushuu - shi 's Esashi it is said that he was pronounced as Sato at the time of the Meiji New Last Name from Sato' s surname. 佐藤 Satou reference.