Etymology and distribution of 茶岡.

Chaoka 【茶岡】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Fukushima-ken , Kouchi-ken , Kanagawa-ken .

① Fukushima-ken Fukushima-shi Birth of Niida. A place name with a record in the notation of "Hi" in the Warring States Period. Place names are also written as "Nitta" and "Niida".

② A variant of Nitta (Nitta). Mr. Nitta retires in the mountains of Ehime-ken after unification of the South and North Korea in 1392 (3 years of Ming and 3 years old) and passes through Tokushima-ken and tells that he came to Wakayama-ken Wakayama-shi Kata. 新田 Nitta reference.

※ Kouchi-ken Takaoka-gun Shimanto-chou Nida is a place name with a record since the North-South morning era.

※ Kouchi-ken Kouchi-shi Niida is a place name with a record since the Azuchi-Momoyama period.