Etymology and distribution of 明柴.

Akeshiba 【明柴】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Akita-ken . Aomori-ken Kuroishi-shi Originated as Asseishi (Asishi). A place name with a record in the notation of "sweat stone" during the Warring States Period. Last name was also written as "shallow stone". 浅瀬石 Aseishi reference.