Short version: would you invite an old friends if your parents were against them being invited?
Extended story:
I have a situation with one person on my current guest list. We were very close friends in college and after for an extended period of time. I would say he was basically my older brother- watched out for me at school, would invite me to hang at his house with his roommates, one of which I started dating for a while, and generally always being there for me.
After he graduated school he actually got a job working with my father. At first it was fine but over a few years he started to get kinda snarky and began saying some not nice things about my dad. It was just that whole "being someone's assistant but having your own ideas and wanting to make changes when it isn't really your place to do so yet" mentality.
Eventually he got his own job within the same area, which meant they still worked with each other, and things kept going downhill. My dad changed to a new school district after a lot of unnecessary drama. Obviously, his rudeness to my dad put a strain on our friendship.
After I got engaged I saw him at a work convention, where he did a few very mature things. He apologized for the way he had acted (to me, as far as I know he hasn't actually said anything to my dad), and then congratulated me on my engagement. We talked for a bit until he had to leave for the evening. Later I got a text message with his address for an invitation.
My mom is very against him being invited, my dad says he wants whatever I want, and I'm completely torn. On one hand, he was a unprofessional jerk to my dad and shouldn't have just sent me his address assuming anything. On the other, he was a very important friend to me.
My parents are paying for most (venue and food), so my head says to just ignore the address and not invite him, but a part of me is also sad that this is what happened to our friendship.
WWYD? Side with parents and their pockets, or go to bat for an old friend?
ETA: to sum it up at the top