Kirsten Elizabeth Rutnik was born on December 9, 1966, in Albany, New York, the daughter of Polly Edwina (Noonan) and Douglas Paul Rutnik. Both her parents are attorneys, and her father has also worked as a lobbyist. Her parents divorced in the late 1980s. Douglas Paul Rutnik is an associate of former U.S. Senator Al D'Amato. Gillibrand has an older brother, Douglas Rutnik, and a younger sister, Erin Rutnik Tschantret. Her maternal grandparents were businessman Peter Noonan and Dorothea "Polly" Noonan, a founder of the Albany Democratic Women's Club and a leader of the city's Democratic political machine. Gillibrand has English, Austrian, Scottish, German, and Irish ancestry.