To whom might I be referring here? ...

Little Miss Bossy Boots and The Poor Little Rich Boy

Here's a clue ...

They demand privacy in Brit Land and use the courts to get it,
but bizarrely they seek publicity in Yank Land via a chat-show host.

Another clue? ...

Their grandmother doles out pretty pointless titles (Well,
pointless in a democracy but perhaps germane to a country
that is still over-run by the descendant spawn of the
Norman invaders), and so has earned herself her own
pointless title ... The Great Parasite Of Windsor.