Etymology and distribution of 下貞.

Shimosada 【下貞】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Shizuoka-ken , Oosaka-fu , Nara-ken . Terrain . A variant of 滝井 . Kumamoto-ken Ashikita-machi In Odagaura, I say that Shimizu is crowded in a well of a mansion as "Takii" and tell him that he changed his name from Akashi surname in the Edo period. 赤星 Akahoshi reference. Oosaka-fu Oosaka-shi was in the Edo period.