Who is Bartimus Mac?

I was checking Facebook today… I’m sure you all know by now that Jon Sharp is In A Relationship with Meredith Martin, but that’s not what this post is about. Under my Friends In Knoxville, there was a friend of mine listed as Bartimus Mac. The thing is, I’ve never added him and have no clue who he is.
Bartimus is a Friend of Justin's in Knoxville

Well, so I decided I would click on over to his profile and maybe it would shed some light on the subject. Oddly enough, it doesn’t show me listed as one of his friends. However it does show that he is friends with Meredith Martin, Ryan Rucker, Jon Sharp, Ben Griffith, and Elizabeth Chapman.
Bartimus is connected to a number of my friends

I think I’ve figured it out though. Someone who used to be a friend of mine and the people mentioned above, deleted their account on facebook. The database connections wheren’t destroyed though when they deleted their account, leaving the connection between those people. This is a potential security hole in facebook.