Etymology and distribution of 五十内.

Isouchi 【五十内】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Kyouto-fu , Shizuoka-ken , Oosaka-fu .

① Kyouto-fu Funai-gun Kyoutanba-chou Origin of the outfield . A place name with a record since the Edo period. It was in the Sengoku period in the same place.

② Kumamoto-ken Ashikita-gun Ashikita-machi Originated from Shimpei, a small figure of Yahata.

③ Topography . Because it divided out to the field. Ishikawa-ken Komatsu-shi Tell him that he was engaged in agriculture in Nicami-cho. Estimated in the Edo period.