Osterman Family History
Osterman Surname Meaning
Swedish (also Österman) and Jewish (Ashkenazic): variant of Oster with the addition of Swedish Yiddish man ‘man’.
Americanized form of German Ostermann. Slovenian and Croatian: from German Ostermann.
In Slovenia it is at least in part of Gottscheerish (i.e. Gottschee German) origin.
Source: Dictionary of American Family Names 2nd edition, 2022
