Ostmann (German) comes from German ōst, from Middle High German ōst, from Old High German ōst, from Old Norse austr, from Proto-Germanic austrą, from Proto-Germanic austraz, from Proto-Indo-European *h₂éwsteros — in the direction of dawn, east.
Ostmann (German): East German man
Definitions
East German man
Ancestry of “Ostmann”, step by step
Ostmann traces back through two separate lines of ancestry.