I'd argue that Peter should be confirmed as Jewish. He comes from Forest Hills, which is historically speaking, a Jewish neighborhood. The story of his birth parents were clearly meant to be a stand-in for the Rosenbergs (
https://en.wikipedia.org/wiki/Julius...thel_Rosenberg), who at the time were thought innocent by large portions of the Jewish community, and other little things here and there.
But here's a question for this thread.
Is MJ Jewish? Should she be? Her Aunt lived in Forest Hills as well.