Nagasawa Family History
Nagasawa Name Meaning
Japanese: written 永沢 ‘long swamp’. Though written with different characters today it is of the same origin as Nakazawa both being common placenames. This surname is found mostly in central Japan. One family of Minamoto origin came from Nagasawa-zato in Etchū (now Toyama prefecture).
Source: Dictionary of American Family Names 2nd edition, 2022