Etymology and distribution of 井ノ木.

Inoki 【井ノ木】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Saitama-ken Kuki-shi . 伊良原 's variant. Saitama-ken Kuki-shi In Edo period tells that it was the Irahara surname in the Edo period. 伊良原 Irahara reference.