Etymology and distribution of 尾仁.

Oni 【尾仁】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Akita-ken , Ibaraki-ken · Shizuoka-ken . A variant of 小宮山 . There is a record in Nagano-ken in 1213 (first year of consolidation). Kanagawa-ken Ashigarashimo-gun It was in the Edo period in Hakone-machi . 小宮山 Komiyama reference.