Etymology and distribution of 後泻.

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

Okayama-ken , Hiroshima-ken .

① Okayama-ken Oda-gun Yakage-chou Originated from Egi, a small figure of the arrowhead .

② Hiroshima-ken Mihara-shi Born of Eiki Kuki- cho. A place name with a record since the Edo period. The place name was also written as "Megumi."