Etymology and distribution of 下益田.

Shimomasuda 【下益田】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Kanagawa-ken . Terrain . From Kumamoto-ken 's Valley of Aso. In Chiba-ken Noda-shi Banchang tells that he added "Valley" to Su which was called by the monk of Shoren-ji Tendai temple which was in Kumamoto-ken Aso-shi . Meiji New Last name in estimation. The location of the temple is unknown. 蘇 So reference.