Etymology and distribution of 在澤.

Arisawa 【在澤】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Yamanashi-ken .

① Originated from the vicinity of Yamanashi-ken Chuuou-shi Otorii (formerly Iimori Township). Estimated from tradition is the Kamakura period. It is a comparative place because the mountainous name of Daifukuji in Shingon sect in the same place is Iiroyama.

② things . Oosaka-fu Kishiwada-shi In Taiji-ku, in Warring States Period Wakayama-ken Iwade-shi I tell him from the name of a ladybird who trained in Negori in Shingon sect and built after his homecoming.