Etymology and distribution of 東角井.

Higashitsunoi 【東角井】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Ooita-ken , Toukyou-to , Okayama-ken . Ooita-ken Kitsuki-shi Tell him that in Honjo he was engaged in agriculture as a descendant of Genji. Estimated in the Edo period. 源 Minamoto reference.