Is he famous? I thought he was in a defunct boy band that had slipped into obscurity until he did some saccharine You Tube wedding speech that he released on social media? I believe on the back of that his band has merged with another defunct boy band to become an even bigger nonentity after cashing in on some arena concerts......kerching!
Slightly off topic but actually Tom (her brother) and the rest of Mcfly are actually a talented bunch - decent musicians and song writers. You're probably unlikely to from the tone of your post but I'd certainly recommend giving Mcfly's recent greatest hits album a listen to, it's full of great pop tunes.