Birth Name: Samuel Joel Mostel
Date of Birth: February 28, 1915
Place of Birth: Brooklyn, New York City, New York, U.S.
Date of Death: September 8, 1977
Place of Death: Philadelphia, Pennsylvania, U.S.
Ethnicity: Ashkenazi Jewish
Zero Mostel was an American actor and comedian. He was the son of Hudia/Yehudis Tzina Druks Schwartz and Israel Mostel. His parents were Eastern European Jewish immigrants, with his mother being from Poland. His son is actor Josh Mostel.
Zero’s paternal grandparents were Yitzchok Zvi Mostel and Rivka Grabel.
Zero’s maternal grandfather was Moshe Druks Schwartz.
Source: Genealogy of Zero Mostel – https://www.geni.com