It CAN be a jewish name but it is a German name either way. Some Steiner's are Catholic's,some are Jewish,some are protestant! Felix Steiner was a Waffen SS General in WW2. My grandmother's mother father's surname was Steiner but they were Catholic.
Is Steiner A Jewish Last Name?
Most of the Steiner's I've met in my life (not counting my family members) are Jews, but it is not singularly a Jewish name.
Somebody knows the origin of Fross surname?