That's mostly a factor of disjoint cultural spheres. I don't know the first, I vaguely associate the second with music but I wouldn't recognize her voice or any of her music (assuming she sings). They could both be movie stars I really have no clue, they're both in a bin labeled 'celebrity, safe to ignore' together with a whole pile of other names that I do know but refuse to further invest in because there is limited time in a life and if you waste it on the celebrity pages then you end up with a less interesting life.

Someone published a plug-in a while ago to remove a certain group of celebrities from your life, I've been toying with the idea to extend that to a more general solution to ban news about people from an extensible list from your life.