I had to look up the writers/performers of the Kings of Leon song "Use Somebody" for work, and was surprised to see that they all had the same last name. Sure enough, the 4 members of the band contain 3 brothers and their cousin; all members of the talented Followill family.
(Side note: they all go by their middle names and not their first!)
They don't give off the typical pop family-band image, but they could have been one marketing decision away from being one!
So close, yet so far away.