Disagree on names

Oh yeah. We've argued about this quite a bit. He has the weirdest taste in names and horror of horrors, he wants to name one of them after my MIL. Nothing against her but me and my MIL don't really get along and I cannot imagine looking at a little girl and remembering the woman who makes my life difficult lol. So if he wants a weird fantasy name, I'd cave in just so long he doesn't name the child after my in laws (or my parents; to be fair)