Who Am I?

One evening when I was about eleven, my siblings and I waited in a car outside a restaurant.  Kids on bikes circled us, calling us "Jew...Jew".  Hunh?  Their ignorance--we weren't Jews--mitigated the threat, but somehow even as a child I knew that yelling back "We're not Jews, you jerks!" was not the right response.  I was a little scared, too. 
 
More recently, my best friend in Lanesborough for ten years at that point (she has since moved) was an observant Jew and daughter of Holocaust survivors.  I can't remember the context, but at a social occasion, she referred to myself and another friend with a similar surname, as “the Germans".   Hunh?  I spoke up--I've never been to Germany and my Pennsylvania Dutch ancestors came to this country in 1750.  I don't identify as German.  I was an "innocent" Quaker!   
 
The kids on bikes scattered when my mother appeared.  My friend and I remained very close. But these two incidents are linked in my mind.  Am I Jewish or German, both, or neither?  

Chris Erb