Etymology and distribution of 安久澤.

Akuzawa 【安久澤】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Niigata-ken , Ibaraki-ken , Kanagawa-ken . Distribution including Asuma.

① Topography . Niigata-ken Niigata-shi In Ayaba-ku Ayabe- ku we tell him that the Agano River was engaged in agriculture on a brightly open land which went out to the fan from the mountains. Estimated in the Edo period. Niigata-ken Niigata-shi It was in the Edo period in Akihabara-ku Higashi-ginzawa.

② Ibaraki-ken It is Asuma at Itako-shi . Tell her that the vassal of Asuma (Asuma) was called honestly. Unknown times. It is unknown whether Aso futures exist. Ken-Ibaraki Namegata-Shi in 阿須間 there last name. 阿須間 Asuma reference.