Why does Billie Eilish have 5 names?
Sophia Koch
Updated on February 23, 2026
Her full name is Billie Eilish Pirate Baird O'Connell
“Pirate was going to be my middle name but then my uncle had a problem with it because pirates are bad.” This prompted her parents, Patrick and Maggie, to chose Eilish as her first-given middle name.Why does Billie Eilish have so many names?
"And soon before I was born, my grandfather died, and his name was William, AKA Bill, Billie. And that's where my name came from." But the Pirate suggestion wasn't totally shot down. Instead, it became one of her middle names, making her full name Billie Eilish Pirate Baird O'Connell.Why do Billie Eilish and Finneas have different names?
Why do Billie Eilish and Finneas O'Connell have different surnames? Billie's full name is Billie Eilish Pirate Baird O'Connell, but she chose to use one of her middle names as her stage name while Finneas kept his as 'O'Connell'.Why does Billie Eilish have a different last name than her brother?
Billie Eilish's brother also, technically, uses a stage nameWhile performing and releasing music, he only goes by his first name. Finneas's full legal name is Finneas Baird O'Connell, meaning he also has the last name of his mother incorporated into his name.