What does referee history has to do with how the outcome of a match would be? This is not one of the things that I can possibly think of while analyzing a match to bet on.
Exactly what I was about to ask, I've never and can never think of the history of the referee when considering my pick on a particular game but I think it's a unique thing to look out for.
Who knows if a referee has a deeper relationship with other club owner or possibly has an affair with some players on the other side too, a bias attitude may arise.