Etymology and distribution of デュワア.

De~yuwaa* 【デュワア】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hiroshima-ken Higashihiroshima-shi . Terrain . Hiroshima-ken Higashihiroshima-shi Shiwaicho Shiwaito tells that the retainer of the president's name used "Hata" and preservation "preservation" because he got a hatake. Estimated in the Edo period. 保長 Yasunaga reference.