So why does he have a Greek name?
Anyway, I got curious (like maybe his father was Greek even though he was born in Hungary) and noticed this:
Father: Tivadar Schwartz (attorney, d. 1968)
Mother: Erzebet Szucz
Given that his pursuits seem to be at odds with the interest of Israel, perhaps he's one of those Jew-hating Jews.
Greek with a name like Schwartz? Try German-Jewish? Besides it is pronounced Shorosh and Greeks dont's have "sh".