Billie Eilish Pirate Baird O'Connell was born in Los Angeles, California, on December 18, 2001. She is the daughter of actress and teacher Maggie Baird and actor Patrick O'Connell, both of whom are also musicians and work on Eilish's tours. Eilish is of Irish and Scottish descent. She was conceived via in vitro fertilization. Her middle name, Eilish, was originally meant to be her first name, while Pirate was to have been her middle name. But after her grandfather William Baird died while her mother was pregnant, her parents decided to name her Billie, after her grandfather.
