Susan Hayward was born Edythe Marrenner on June 30, 1917 in Brooklyn, the youngest of three children born to Ellen and Walter Marrenner. Her paternal grandmother was an actress, Kate Harrigan, from County Cork, Ireland. Her mother was of Swedish descent. She had an older sister, Florence (born May 1910), and an older brother, Walter, Jr. (born December 1911). She was born on the same day, and in the same city, as entertainer Lena Horne.