Birth Name: Alexandrea G. Borstein
Place of Birth: Highland Park, Illinois, United States
Date of Birth: February 15, 1971
Ethnicity: Ashkenazi Jewish
Alex Borstein is an American actress, writer, producer, and comedian.
She is the daughter of Judith and Irving J. Borstein, who are mental health professionals. Her paternal grandparents were Polish Jewish immigrants, and her father was born in Atlanta, Georgia, where he was raised Orthodox Jewish. Her mother was born in Budapest, Hungary, to a Jewish family from Hungary and Serbia; she moved to the United States after the Hungarian Revolution of 1956.
Alex’s paternal grandparents were Paul Borstein and Bessie Kaufman (the daughter of Helen). Paul and Bessie were Polish Jewish immigrants.
Alex’s maternal grandparents were Jenö Grünfeld (later Eugene Gábor) and Vera Winternitz (the daughter of Dezsö Winternitz and Gizella Lakner). Jenö was born in Debrecen, Hungary. Dezsö was born in Subotica, Serbia. Gizella was born in Pest County, Hungary. Dezsö and Gizella were killed in the Holocaust, in Auschwitz.
Alex has stated that her heritage is “Hungarian-Mongolian”, evidently coming from her maternal grandmother. Alex’s grandmother Vera Winternitz was the granddaughter of Zsigmond Winternitz and Netti Weitzenfeld on her father’s side, and of László Lakner and Johanna Wachs on her mother’s side. It does not appear that any of them were Mongolian.
Sources: Genealogy of Alex Borstein (focusing on her mother’s side) – http://www.geni.com
Alex talks about her Jewish background – http://forward.com