Etymology and distribution of 椿澤.

Tsubakizawa 【椿澤】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Okayama-ken , Shizuoka-ken , Nagano-ken .

① Shizuoka-ken Kamo-gun Nishiizu-chou Birthplace of Nishina. A place name with a record since the Kamakura period.

② Origin of Nagano-ken Oomachi-shi (formerly Nishina). A place name with a record since the Heian period.

③ Topography . "Family" added to Jin which is the surname of Amagi archipelago of Kagoshima-ken . There was a case that Oosaka-fu Oosaka-shi renamed in 1952. 仁 Jin reference.