Etymology and distribution of 大田本.

Ootamoto 【大田本】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Gifu-ken Mizunami-shi . A variant of the 大蝶 . In Gifu - ken Mizunami - shi tell you that it was called from association of large (oh) and male (o), butterfly (butterfly) and bird (butterfly). Meiji New Last name in estimation. 大蝶 Oochou reference.