I was reading the latest issue of FIGHT! this month-- theres a long article about him inside. Apparently, he has daughters by both his ex wife Oksana and the woman he just married ( assuming the woman referenced in the October issue is the same one he married this week).
Overall a lot of intersting little things in the article I didn't know about Fedor before-- especially that he has already decided in his mind when he's going to retire, though he hasn't revealed when.