Etymology and distribution of 船腰.

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

Saitama-ken Oosato-gun Yorii-machi . Saitama-ken Chichibu-gun Nagatoro-machi Birth of Yanase. In the Kamakura period there was a place name with a record of "Nana". The place name was also written as "瀬 瀬".