Irritated with his mentality

So my fiancé and I enjoy discussing potential baby names because we both want a large family and have already started trying.

When it comes to boy names he wants to do something for his father, who unfortunately passed away when he was 12. I have two middle names and want to kind of keep that going as a family tradition, it’s unique.

The boy’s name that he picked is Alexander (his middle name and has ANDE: his father’s name was Andrew) Paul (also his father’s middle name). That’s completely fine with me. I want to add one name and make it Alexander Robert Paul. Robert is my grandfather’s name and he’s been my father figure throughout my entire life.

My fiancé literally goes “you can keep that tradition going with the girls, and I don’t like the name Robert anyways”.

Personally, I don’t think it’s about the name I think it’s about the person that the name represents (exactly like the names he chose for his father). Should I address this before we decide to start a family? Because I feel like this is a situation where it should be give and take, understanding and compassion, and there’s none of that there. Like he doesn’t understand that it’s just as important to me, and it’s really not that big of a request to ask, and IMO that full name sounds cute as hell. (Last name Kelly so put it all together). Idk. I’m just bitter that he’s thinking about only his side of the family when it’s the joint start to ours.

EDIT: for the few ladies saying “2 middle names is too much, that’s 4 names not needed” I have 2 middle names and at one point and time I had 2 last names as well. While that’s your prerogative that’s not my main concern and doesn’t effect that I’ll still do it anyways. My main concern is should I discuss how I’m feeling about it with my fiancé. And for the one woman who said “he said do it for the girls that’s his compromise” there is not one female in my family that I would give my child their name. If god forbid I only have one boy, the only person I wanted to honor is up shits creek because my fiancé wants to be an asshat. Please give helpful advice, not bullshit I’ve already heard.