FOX contributor Newt Gingrich is upset:

Newt Gingrich, guardian of Catholic values

That isn't really fair to Newt, though. Gingrich has only been divorced twice so far. There was Jackie, his former high school math teacher, who he divorced as she was in the hospital recovering from cancer surgery, and Marianne, who he married shortly after divorcing Jackie, and with whom he was still married when he began his relationship with Callista -- an affair that occurred around the time he was promising to never give another speech as Speaker of the House without mentioning the Lewinsky scandal. He and Callista are still married.
Anyway, in fairness to Gingrich, that's only two divorces.
UPDATE: Maybe Gingrich was just getting a head start on displaying the enthusiasm of the convert. Chris Cillizza reported today:
Gingrich To Become a Catholic Saturday: Former House Speaker Newt Gingrich will officially convert to Catholicism this Saturday at St. Joseph's in Washington, D.C. The move has long been planned -- the New York Times Matt Bai mentioned it in a profile of Gingrich last month -- and will allow Gingrich and his wife, Calista, to practice the same faith. (Gingrich was a Baptist for much of his life.) Let the "what does this mean for 2012" speculation begin!
So he isn't even a Catholic yet, and he's already lecturing Notre Dame about how best to uphold Catholic values. Nice.