Etymology and distribution of 古楠.

Kokusu 【古楠】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Ooita-ken , Fukuoka-ken . Ooita-ken Taketa-shi Birthplace Originally borrowed from the salt hands of Shimoda-Kita's Shimoda Kita. Hiroshima-ken Fukuyama-shi Marunouchi was in the Edo period in the Bingo Fukuyama Samurai of the Clan Office. Good neighbor . Fukuoka-ken Fukuoka-shi Distributed in Kamiyamon Nishi-ku.

※ Ooita-ken was a vassal of Mr. Otomo who took the ground at Kamakura period and Muromachi period. Estimated in the same notation of the owl name that Mr. Otomo called in the Kamakura period in the same place. 大友 Ootomo reference. 垣手 Kakide reference.