Etymology and distribution of 尾本原.

Omotobara 【尾本原】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hyougo-ken , Okayama-ken · Tokushima-ken . 桂 's variant. Tradition with Hyougo-ken . Inferred from tradition is a rename of the early Edo period. 桂 Katsura reference.