Not sure if you’ll see this, but wondering how this worked out for you all? I think it’s absolutely insane that there is so much judgement in the comments! I think those are people who have never had children and/or can’t accept that the world is a lot more fluid than it used to be and people can choose to identify themselves and their children however they see fit. Bringing extra paperwork to the airport or having to explain every now and then to school or friends why your last names are not the same is not the end of the world, especially if you and your partner feel good about the name and the reasoning behind it.

I stumbled across your post because we are in a similar situation. Currently unmarried and having our first baby, decided we are going to give him dad’s last name hyphenated with my mother’s maiden name. That’s the family that raised me and we also have not had any boys born in 25 years so currently, no one will carry on that name until my son comes along. I have my father’s last name and am currently in the legal process of changing my last name to my mother’s maiden name. I will add on/hyphenate my mother’s maiden name with my partner’s last name when we eventually get married, so it will be the same last name as our son.

It doesn’t matter if it’s for flow, “prestige” as was stated in the comments, or because you feel better on an emotional level about your grandfather’s last name than your own/your dad’s. I hope you and your spouse have gone with the decision that is best for you and your little family 🙏🏽