Sumiya 【墨矢】2 The Japanese surnames etymology dictionary.
Kouchi-ken . Terrain . From the side of the valley. Tokushima-ken Mima-gun Tsurugi-chou Sadako Nippura tells me that it is the Meiji New Last Name . Kouchi-ken Kouchi-shi Marunouchi was in the Edo period in the Tosa clan of the clan office. Good neighbor . Kouchi-ken Takaoka-gun Nakatosa-chou Hisashi is based.