Etymology and distribution of 五反.

Gotan 【五反】^{レベル4
About 500}  The Japanese surnames etymology dictionary.

Hokkaidou , Toukyou-to , Yamagata-ken .

Originated from Niigata-ken Sanjou-shi . A place name with a record since the Kamakura period.

② Kyouto-fu Originated from Kyouto-shi 's Sanjyū - dori area. A place name with a record since the Heian period.

※ Abstract . Abbreviation of three boat fields. I used 'Three' of Mi soup field. There was a case where Oosaka-fu Oosaka-shi renamed in 1950. 三升畑 Sanjoubata reference.