I recall on an old thread that was about personal unions that didn't but almost came about, someone mentioned an eccentric Duke or Elector that might have inherited Brandenburg, (possibly) Poland, and Bohemia. The thing was he was a bit of an Alchemist, but also if I'm not mistaken against Marrying, and so somehow I think his brother inherited and the union fell through? If this rings a bell can anyone point me to a name, I'm thinking of doing a TL about this.