The Japanese surnames etymology dictionary.
Hokkaidou , Kouchi-ken , Iwate-ken . Terrain . Toyama-ken Nanto-shi It says that there was a tea plantation at Azai. Estimated in the Edo period. Hokkaidou Iburishi-chou Abira-chou In Aoba, tell her that she changed pronunciation from Chahata to Chabatake with Toyama-ken 's appearance. Estimated in the Tokyo era. Iwate-ken tells Miyako-shi that he had a tea plant in the Edo period.