Etymology and distribution of 正一.

Shouichi 【正一】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Ehime-ken . Ehime-ken Imabari-shi Born of Takaichi. A place name with a record since the Heian period. Last names are also written as "Takechi" and "Takeichi". 武智 Takechi reference. 武市 Takeichi reference. Ehime-ken Iyo-gun Tobe-chou Takaichi is a stopover. A place name with a record since the Edo period. Tells that the place name was developed by Mr. Takaichi in 1185 (the second year of the second year).

Originated from Nara-ken Takaichi-gun. Place name with a record since the Kofun period. There is a record of the surname of Takaichi prefecture lord in the Asuka period.