Sada 【佐田】5 The Japanese surnames etymology dictionary.
① Topography . Variant of 下窪 . Tokushima-ken Mima-gun Tsurugi-chou Tell me that you are Meiji New Last Name in Sadako. From the gateway system of the Edo era from the Shimukubo gate. An example of the location of the gate. Kagoshima-ken Kirishima-shi Mizukibe- cho Takeko. Kagoshima-ken Kanoya-shi Shukubo Yashiki at Kurihara- cho Nuri.