Chris Guest is the 5th Baron Haden-Guest of Saling, in Essex. Sounds very posh, but his dad was actually a dancer/choreographer with several notable ballet companies. Anthony Haden-Guest, the journalist, is Chris' older brother.
Along with Kelsey Grammer losing his sister, I remember that Patrick Duffy's parents were murdered back in the 80's, and Woody Harrelson's dad was convicted of murdering a federal judge in Houston. And, of course, Michael Jordan's dad was murdered, as well.
There's no way I could sell a celeb porno without laughing my ass off.
And, eerily, Stevie Ray Vaughan died on the same date as his father had, four years earlier.