Etymology and distribution of 豊沢.

Toyosawa 【豊沢】^{レベル5
About 2,200}  The Japanese surnames etymology dictionary.

Yamaguchi - ken Tokuyama. 広実 variant.

Toyozawa 【豊沢】^{レベル5
About 2,200}  The Japanese surnames etymology dictionary.

Ibaraki-ken , Kanagawa-ken , Toukyou-to .

① Birth of Gunma-ken Kiryuu-shi Hirosawa town. A place name with a record since the Kamakura period.

※ Near Saitama-ken Kumagaya-shi (formerly Hirosawa Township) is a place name with a record in the Heian period.

② Tokushima-ken Mima-gun Tsurugi-chou Originated from Hirosawa, a small figure in Iu.

③ Kyouto-fu Kyouto-shi Originated from the vicinity of Hirosawa Pond in Saga Hirosawa Town, Ukyo-ku. Niigata-ken Niigata-shi Meiji New surname by monk of Izumi Temple of Jodo Shin Buddhism in Nishi Harboru 10th town in Chuo-ku. In the same temple, tell the land that was established from 1182 to 1183 (Susonaga year). The mountain range of the temple is also extensive.

④ Topography . From wide sawa. Miyazaki-ken Ebino-shi From the Hirozawa gate of the gate division system which was in the Edo era in Saigo. Yamaguchi-ken Hagi-shi Horiuchi was in the Edo period in the Choshu clan of the clan office. The same clan says that in 1865 (the first year of Keio) he was renamed from Hatano surname by clan. 波多野 Hatano reference.