Etymology and distribution of 正円.

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

Tokushima-ken , Hokkaidou , Oosaka-fu .

① 竹岡 surname. Ishikawa-ken Kanazawa-shi Marunouchi was in the Edo era at the Kaga clan in the Clan office.

② Topography . "Oka" was added to Takeshu which is the surname of the Kamoshima-ken Amami archipelago. Kagoshima-ken Ooshima-gun Uken-son There is a tradition in the department . Estimated at the time of returning to Japan in 1953. 武 Take reference.