Finneas O’Connell and Billie Eilish Then
There’s a reason why these two become such accomplished adults! And the cause for this is named Maggie Baird (and possibly their father, Patrick O’Connell, as well). Maggie, Billie and Finneas’ mother, is a successful actress and playwright. She chose to homeschool her children so that they could spend quality time together while also having the opportunity to learn.
As a result, even when they were very little children, Billie and Finneas were already composing music. The reason why these renowned siblings have different surnames is because Billie acts under her middle name, Eilish, which is also her stage name, and hence has a separate surname from her sister.