Etymology and distribution of 唐苧.

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

Nagasaki-ken , Kumamoto-ken , Shizuoka-ken . 久木山 there last name. Kumamoto-ken Kumamoto-shi Chuo-ku Honmaru was in the Edo era in the Nakatsu clan in the Clan office, Okinawa-ken Nakatsu-shi ninnocho , a clan of the Kumamoto clan. 久木山 Kukiyama reference.