Etymology and distribution of 洲戸.

Sudo 【洲戸】^{レベル3
About 70}  The Japanese surnames etymology dictionary.

Kanagawa-ken Yokohama-shi Kanagawa-ku. Korean type . Toukyou-to Oota-ku has a record of naturalization on January 13, 1970. The real name is Kang. 姜 Kyou reference.

※ It was in the Azuchi Momoyama period in Niigata-ken .