Kate Mara

Kate Mara was born on February 27, 1983, in Bedford, New York. Her parents are Timothy Christopher Mara, an NFL scout and vice president of the New York Giants for player evaluation, and Kathleen McNulty Mara (née Rooney). She is the second of four siblings, with one older brother, Daniel; one younger sister, the actress Patricia "Rooney"; and one younger brother, Conor. Her ancestry is Irish, one quarter Italian, and smaller amounts of German, French-Canadian, and English. Her father is one of 11 children, through whom she has 20 aunts and uncles, and 40 cousins.

She is a great-granddaughter of both New York Giants founder Tim Mara and Pittsburgh Steelers founder Art Rooney Sr. Her mother's side of the family has held ownership in the NFL's Pittsburgh Steelers football team since its formation in 1933, and her father's side of the family has held ownership in the NFL's New York Giants since its formation in 1925. Her paternal grandparents were Wellington Mara and Ann Mara. Wellington co-owned the Giants football team from 1959 until his death in 2005, and was succeeded by his son (Kate Mara's uncle), John Mara, who is currently President, CEO, and co-owner of the team. Kate Mara's maternal grandfather, Timothy James "Tim" Rooney, has operated Yonkers Raceway in Yonkers, New York since 1972. Her granduncle, Dan Rooney, chairman of the Steelers, was a former United States Ambassador to Ireland and the co-founder of the charitable organization The Ireland Funds. Her first cousin, once removed, Art Rooney II, is the current president and co-owner of the Steelers.

Mara began acting at the age of nine in a school musical. She attended several youth theater-arts schools and appeared in community theater and in school plays. In an Esquire magazine interview, she says she was "painfully shy" growing up, adding she only had one friend.

Her first audition was for the NBC police drama Homicide: Life on the Street. She did not get the role, but knew from then on she wanted to act. Mara graduated from Fox Lane High School a year early, and was accepted into the Tisch School of the Arts at New York University to study musical theater, but deferred her slot to work as an actress.