Grrr.. husband and I disagree on girl names

So if it’s a boy we definitely love Oliver Dean, and we would be using dean after his best friends middle name because he used my husbands middle name for his son. I was totally fine with this. However, my husband is giving me shit about using the name Katie, which would be after my mom who passed away when I was 19 (he knew her as well) He said it’s no offense to my mom but he never liked the name Katie. I told him I’m not a big fan of dean either but I don’t mind using it since it means a lot to him. He isn’t budging on Katie though, and it’s really starting to piss me off. I’m hoping it’s a boy so we don’t have to argue about it.. but still.. what would you do?!