Etymology and distribution of 三渡洲.

Santosu 【三渡洲】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Ishikawa-ken Kaga-shi · Miyazaki-ken Miyazaki-shi . Terrain . From sand and beaches. Ishikawa-ken Kaga-shi Tachibancho, Miyazaki-ken Miyazaki-shi Distributed in Kiyohara - cho Kiyohara.

※ Abstract . Sanko's abbreviation. Aomori - ken Hirosaki - shi There was a case where Shimokuda silver town was changed to Sasase surname under Hirosaki clan in the shadow office abbreviated Sasuko surname at Meiji New surname. 砂子勢 Sunakose reference.