Tome 【留】2 The Japanese surnames etymology dictionary.
Kumamoto-ken , Kagoshima-ken , Hiroshima-ken . Thing . From a pigeon of a bird. Kumamoto-ken Kumamoto-shi tells that he was renamed from Nakajima surname by the name of "dove's (doctor) doctor" which was to treat pigeons in Nagasaki-ken Nagasaki-shi during the Edo period. Kumamoto-ken Kumamoto-shi met with a doctor during the Edo period. 中島 reference.