Etymology and distribution of 歌枕.

Utamakura 【歌枕】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Hokkaidou , Aomori-ken , Ibaraki-ken .

① Birth of Toukyou-to Chiyoda-ku (formerly Edogo ). Place name where there is a record in 1261 (Hirohito first year). Tell him that he called it the late Heian era in the same place.

② Ibaraki-ken Naka-shi Origin of the lower Edo. A place name with a record since the Edo period. Tell him that it was called Muromachi period in the same place. Ibaraki-ken Inashiki-shi Edo - zaki is a place name with a record since the Sengoku period.