Etymology and distribution of 中岡.

Nakaoka 【中岡】⁵ The Japanese surnames etymology dictionary.

Toyama-ken Takaoka-shi , Ishikawa-ken · Niigata-ken . Toyama-ken Takaoka-shi Noh The town was a place name with a record since the Edo period. It is distributed in the same place. Niigata-ken Itoigawa-shi Nogi town was a place name with a record since the Muromachi era, Ishikawa-ken Kanazawa-shi Marunouchi was in the Edo era in the Kaga clan in the Clan government office. Ishikawa-ken Northern area (formerly Noto Country) is a place name with a record since the Nara era. There is an example using Noto's "Noh".