Nah I just have a fetish for the whole family. A lot of people don't know or care who it is so it usually doesn't matter. Not that I am sure that it matters ever.
I really don't worry if I "sully" the family name, the name actually literally means- crap. Manure. I don't think you'll find that on Wikipedia.
A lot of people just think it's a street name in the United States, so why not?
The personality doesn't match mine either, I don't see why it would have to. But it is an indicator of something I do like.

It's like naming yourself strawberry because you love strawberries. Not because you are one.
I like the name Meursault in itself. Even outside of books and interpretations...Good choice.