Surname thoughts

[Throughgrittedteeth]

DP are expecting our first DC together. Both of us have a DC from a previous relationship - I have a DS and he has a DD.
My DS's surname uses both mine and my exes names together and DP's DD uses just his surname.
I just wanted some external thoughts on what you would do with new baby's surname. We are going to get married eventually and I plan on keeping my surname, in part because DS has my name, but also because I like it.
Logic tells me it should be something like "New baby my surname his surname". Any thoughts?

[carmenta]

There is no one way to solve this problem.

Our solution was-
Me: carmenta MySurname
DH: DH HisSurname
DD1: DD1name HisSurname MySurname
DD2: DD2name MySurname HisSurname

It's not perfect but double-barrelling our names would sound daft. I didn't find out until recently that some people pick a family name from somewhere in their shared tree and all change to that so the whole family has the same name, which we would probably do if we started over.

[Throughgrittedteeth]

Thanks for your reply. I think if neither of us had other DC it would be pretty simple as I would happily take DP's surname. I was quite pig headed about my DS's surname and wouldn't shift on him having mine in there quite proud now as I knew deep down that my relationship with my ex wouldn't work out.
I would still like this DC to have some link to me and it's brother but equally a link to DP and it's sister!

I think perhaps what I said originally is probably the simplest way of keeping us all happy.

[Throughgrittedteeth]

Incidentally DP hasn't given his opinion on any of this, which is why I'm musing on here

[SorenaJ]

Definitely new baby your surname his surname! Or the other way around. Or you can merge them, if it sounds good.