All rise for Mr and Mrs Ham and their son Rex. (Softers) Your first one violates The Rule!

Look who's here its Mr & Mrs O'Groats and their son John

[Rosie} CanI just say that the problem with "The Rule" is that a large proportion of places *are* named for people, whether resident or saintly. Thus Peterborough - but I'd allow this, as it's all one word, whereas Mavis Enderby (Lincs) would be instantly disqualified.
Mt & Mrs Caster and their son Don Caster.

And now, let's hear it for Mr and Mrs de Janeiro and their son Rio. (Herr Bratsche) Doesn't using the already-existing personal name as part of the "answer" defy the whole purpose of the game, which is to conjure names out of thin air, as it were? There's no essential difference, in this sense, between your two examples. BTW, aren't you up rather early this morning, for a musician? :-)

[Rosie] I don't do it for a living! By day, IT consultant, by night, musician.

Please welcome Mr and Mrs On-Wye and their son Ross. And from the wilds of Wyoming here's that retiring young lass Shy Anne. (Herr Bratsche) Oh, hard cheese. :-)

[Rosie] It's OK, it pays the bills. Mr & Mrs Gate and their son Harry Gate, closely followed by Mr & Mrs Istone and their daughter Pen Istone.

While in the realms of fantasy, all the way from Ambridge , introducing Penny Hassett.

Ladies and Gentlemen, please put your hands together for Mr and Mrs Ericay and their son Bill. (Herr Bratsche) If you twang your knob fast enough do you get a Penis Tone?

[Rosie] Winces at the very thought

**twangs nob very fast and places it against ear***
***does it again***
Rosie] No, but it's kind of fun.

From the beautiful Lake District, Mr & Mrs Dermere, and their daughter Wyn Dermere.

All the way from Essex I see we have Mr and Mrs Ple-Soken and their godlike son, Thor.

And with us once again are those outrageous socialites Mr & Mrs Stone and their daughter Connie

Please welcome Mr and Mrs Isle and their son Carl.

Please be upstanding for Mr and Mrs Terr and their son Les

Joining us all the way from Italy, we have Fiona Renze and her friend Silas Ennar (who prefer to be addressed by their nicknames please).

Will you all put your hands together, please, for Mr and Mrs Ws-y-coed and their daughter Bet.

Will you welcome please, Mr and Mrs Man and their daughter, Isla.

And resplendent in their patriotic orange are our Dutch guests Mr & Mrs Bolden and their son Wim

Mr & Mrs Rith and their daughter Pen, and Mr & Mrs Dull and their son Ken.

Mr and Mrs Lazoosh and their son Ashley Barrisdale Donnisthorpe. Hello Ash B. D. Lazoosh

Please engage low gear for Mr and Mrs Ock and their son Paul. I don't usually do LOL, but the last four were highly chortleworthy.:-)

Please welcome Mr & Mrs Bee-Anne and their daughter Carrie

Also please welcome Mr & Mrs Toft and their daughter Lois