Birth Name: Robert James Gronkowski
Place of Birth: Amherst, New York, U.S.
Date of Birth: May 14, 1989
Ethnicity: Polish (at least 37.5%), some German and Swedish, possibly other
Rob Gronkowski is an American professional football player, and actor. He is nicknamed “Gronk.”
He is the son of Diane (re-marrage surname Walters) and Gordon Gronkowski. His father is of three quarters Polish descent. Rob was raised in Williamsville.
Rob’s paternal grandfather was Ignatius Thomas Gronkowski (the son of Ignatius J. “Iggy” Gronkowski and Helen Majshak/Majchrzak). Rob’s grandfather Ignatius was born in New York. Rob’s great-grandfather Ignatius was an American Olympic cyclist, whose parents, Franciszek Gronkowski and Mary Bayger, were Polish. Helen was also of Polish origin, the daughter of Ludwig Majchrzak and Catharina Kasior.
Rob’s paternal grandmother was Irene L. Popiela/Papiela (the daughter of Stanislaus/Stanley Popiela/Papiela and Clara G. Anderson). Irene was born in New York. Stanislaus was born in New York, the son of Polish parents, Michael/Michal Popiela and Josephine Nowak. Clara was the daughter of Charles F. Anderson, who was of Swedish origin, and of Elizabeth, who was German.
Sources: Genealogy of Rob Gronkowski (focusing on his father’s side) – https://www.geni.com
Rob’s paternal great-grandfather, Stanislaus/Stanley Popiela/Papiela, on the 1910 U.S. Census – https://familysearch.org