Etymology and distribution of 土井中.

Doinaka 【土井中】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Niigata-ken , Oosaka-fu , Hiroshima-ken .

① Topography . From flowers and fields. Niigata-ken Tainai-shi Yahata is based. Tell him that he was engaged in agriculture in the same area. Estimated in the Edo period. Wakayama-ken Kaisou-gun Kimino-chou Hanahara is a geographical name with a notation of "Hananohara" in the Nanboku-mori era.

② Kagoshima-ken Satsumasendai-shi Originated from Hanano Mine in Uchinomachi 's deputy minor. There was Hanano gate of the gate division system in the Edo period in the same place.