Are You Related To Billie Eilish?

Billie Eilish Pirate Baird O’Connell was born in Los Angeles, California, on December 18, 2001. She is the daughter of teacher, actress, and screenwriter Maggie Baird, and construction worker Patrick O’Connell, who worked part-time as an actor, appearing in films like Iron Man (2008). Both her parents are amateur musicians. She is of Irish and Scottish descent.
Source: geneanet