Etymology and distribution of 道和.

Douwa 【道和】^{レベル3
About 80}  The Japanese surnames etymology dictionary.

Ibaraki-ken , Shizuoka-ken , Yamanashi-ken . A variant of the 藁科 . Ibaraki-ken Jousou-shi It was in the Warring States Period as the vassal of Mr. Toyoda who was the castle owner of Toyoda Castle of Toyota. 藁科 Warashina reference.