Steinfeld was born to her parents Peter Steinfeld and Cheri Domasin. Her father is a fitness expert and a personal trainer while her mother is an interior designer.
The Dickinson star has an older brother, Griffin, who is a NASCAR driver.
As for her ethnicity, Steinfeld opened up about it during a 2016 interview with Pep.ph.
"So, my grandpa is half-Filipino. My mom's dad. He's my great-grandfather who came from Bohol."
According to Nicki Swift, her maternal grandfather was also half African-American. Her maternal grandmother was part English, German, Scots-Irish/Northern Irish, and Scottish.
Her father, on the other hand, is Ashkenazi Jewish.
