Etymology and distribution of 羽瀬.

Hase 【羽瀬】^{レベル3
About 400}  The Japanese surnames etymology dictionary.

Nagano-ken .

① Topography . From "Suzuki" and Suzawa of the favorable character. Tell Nagano-ken Okaya-shi that you called from Masuzawa the same place. Period, location unknown. There is also a story that Nagano-ken called Masuzawa in Suwa-gun in 1593 (Bunrun 2 years). Location unknown. "Increase" is favorable. Nagano-ken Kamiina-gun Minowa-machi It was in the Edo era in Naka -eki Ohtake . Fukui-ken Nanjou-gun Minamiechizen-chou Recorded in Yusuyama Castle in Ashikari in 1465 (6th year of remission).

② Iwate-ken Ichinoseki-shi Fujisawa town Origin Masuzawa. Place name with a record in Saito's notation during the Heian period. Last name was also written as "Masuzawa".