Etymology and distribution of 辻井.

Tsujii 【辻井】^{レベル5
About 13,900}  The Japanese surnames etymology dictionary.

Hokkaidou , Saitama-ken Chichibu-shi , Toyama-ken Nanto-shi .

① Origin of Toyama-ken Nanto-shi era. A place name with a record since the Edo period. The place name was also written as "monster".

② Creation . Gunma-ken tells me that it is the Meiji New Last Name due to the current year and month. Saitama-ken Chichibu-shi Makita tells that he was engaged in agriculture. Estimated in the Edo period.