Etymology and distribution of 土井丸.

Doimaru 【土井丸】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Ibaraki-ken .

① Topography . 羽根田 's variant. It was in the Edo period in Kagoshima-ken . Kagoshima-ken Satsuma- chun Satsuma-chou From the Haneda gate of the gate division system which was in the Edo period in the Torahi.

② Ibaraki-ken Shimotsuma-shi Originating Hane (Honego). A place name with a record since the Edo period. It is based in the same place. Tell them that they are groundbreaking in the same place.