Etymology and distribution of 江垰.

Etao 【江垰】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Kyouto-fu . Distribution including Oshima. A variant of 大島 . Kyouto-fu Fukuchiyama-shi In my private city I tell you that I changed my name from Oshima surname. There is also a story that it was said that in Azuchi Momoyama period in the same place. 大島 Ooshima reference.