Etymology and distribution of 古久澤.

Kokuzawa 【古久澤】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Okayama-ken , Tottori-ken Tottori-shi , Hyougo-ken .

① There is a fixed time in the name of a man. Okayama - ken Tomata - gun Kagamino - chou Tsukaya, Tottori - ken Tottori - shi Kofu town is based in Tamako. It was in the Edo period in the same place.

② Creation . Added "Hisashi" to Kagoshima-ken 's Amami archipelago, which is the first surname. Estimated at the time of returning to Japan in 1953. 定 Sada reference.