Etymology and distribution of 伹木.

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

Hokkaidou , Kagawa-ken , Yamaguchi-ken .

① variant of 長井 . Shiga-ken Hikone-shi Kaname Town was in the Edo period in the Hikone san of the clan office.

② variant of 長尾 . Kagawa-ken Ayauta-gun Tells Ayagawa-chou that Nagao surname was mistaken for the surroundings as "Nagai" in the Edo period. 長尾 Nagao reference.