Kousawa 【香沢】1 The Japanese surnames etymology dictionary.
Toukyou-to , Saitama-ken · Kanagawa-ken . Saitama-ken Originated from South Saitama- gun (formerly Saitama-gun). Place name with a record in 733 (Tenpyo 5 years). Saitama -ken Gyouda-shi Saitama (Saitama), which was in the range of Saitama- gun, also pronounced "Sakijama" and also pronounced Saitama. Toukyou-to Chuuou-ku Saitama-ken Kumagaya-shi at Nihonbashi Omishi Town Tell that he was renamed from Yoshida surname at the Meiji New Family Name due to the Saitama shop's name used in the Edo period because it is from Nakara. 吉田 reference.