John Kerry: When Kerry Was Kohn: The Jewish Roots of John Kerry
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[Here it is, right from the mouths of Jews … The Jewish roots of John Kerry. I don't have a subscription, so this is all I can post. But yes, this is what the Jews say. Jan]
The new nominee for secretary of state only found out about his Jewish grandfather while running in the 2004 presidential election.
BOSTON – Senator John Kerry, with his mother’s New England patrician pedigree and his Irish last name actually has a grandfather who was born a Jew in the former Austro-Hungarian Empire.
The news was a revelation to Kerry himself, who only found out about his Jewish roots while running in the 2004 presidential election.
Source: https://www.haaretz.com/jewish/.premium-when-kerry-was-kohn-1.5279459