Osterman Family History
Osterman Name 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