Etymology and distribution of 澁.

Shibu 【澁】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Kanagawa-ken , Kagawa-ken , Kagoshima-ken . Distribution including Yasuda.

① There is 安田 surname. 安田 Yasuda reference.

② Topography . Added "rice" to Taishi which is the surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 泰 Tai reference.