Clement Greenberg and Kurt Cobain. One is the great formalist critic of twentieth-century art. The other is the former front man for the rock band Nirvana. If you don't know who Clement Greenberg was, you can read my review of Alice Goldfarb Marquis's Greenberg biography here (from the Wall Street Journal). If you don't know who Kurt Cobain was, well, you're not a member of my generation (Roger Kimball asked me, "Wasn't he a famous drug addict?").
Now for the connection (I owe it to Dara for making the discovery): Kurt Cobain was married to Courtney Love. Love is the grand-daughter of the writer Paula Fox. Fox is married to the writer and translator Martin Greenberg. Martin is Clem's brother.
It's a small world!