Etymology and distribution of 蝶.

Chou 【蝶】^{レベル3
About 70}  The Japanese surnames etymology dictionary.

Shizuoka-ken Hamamatsu-shi , Aichi-ken .

① things . From two bridges. Tell Kanagawa-ken (formerly Sagami country) that Uesugi called it. Estimated in the late Kamakura period and early Muromachi period. 上杉 Uesugi reference. Shizuoka-ken Hamamatsu-shi Osaki based in Mikkaichi-cho Kita-ku. It was in the Edo period in the same place. The place is a place with Seto bridge over Lake Hamana. Shizuoka-ken Hamamatsu-shi Tells Hamakita Ward that it is a pioneer.

② Iwate-ken Kuji-shi Yamagata Town originated from a small bridge of small country small bridge. Tell him that it was a place to cross two bridges here.