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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to consider changing my son’s surname after I marry?

143 replies

su203456 · 13/05/2026 19:34

Just looking to see if anyone has any advice or has been in a similar situation.

I fell pregnant with my son at 18. Me and his dad weren’t together long and had ended things before I found out I was pregnant. My son has my surname, not his dad’s.

Fast forward 7 years and I’m due to get married in a few months to my fiancé. We’ve since had a child together who has his surname, and I’ll be changing mine when we marry.

My son’s dad sees him every other weekend and everything is perfectly amicable, but outside of those visits he doesn’t really check in. We don’t hear from him in between, and he’s not involved in the general day-to-day things like school, clubs, appointments etc.

What’s brought this up is that my son recently asked me about surnames and said he’ll be the only one in the house with a different name?

I’m now wondering whether I should look at changing his surname so we all match as a family. My fiancé has been in his life since he was one, so he won’t remember life without him there.

Part of me worries how his biological dad would react, but then equally my son doesn’t have his surname anyway. I did think about double barrelling, but honestly both surnames together are a bit of a mouthful. I also think it’s a huge deal changing a child’s name but that could just be my anxiety!

Would it be unreasonable to consider it?

OP posts:
DurinsBane · 13/05/2026 20:45

Dartmoorcheffy · 13/05/2026 19:56

If you divorce he would be stuck with the surname of a man who he isn't related to though.

Who I assume he would still though in that situation, as he has been in his life since he was a baby

NamelessNancy · 13/05/2026 20:46

At the moment there is no problem. You're looking for a solution to a problem which will arise IF you change your name. Just keep names as they are?

QueenImprov · 13/05/2026 20:46

I would keep your name. Too much of a risk if you divorce and your son is stuck with that name. I think it’s important for his self of identity,

RaspberryFeet · 13/05/2026 20:46

su203456 · 13/05/2026 20:26

I wouldn’t say new family! Step dad has raised him for 6 years. Sister is 3. Little involvement from bio dad - in fact my son doesn’t even like going to him!

I just mean new family as in the family he has made. Rather than the family he was born in to.

ClayPotaLot · 13/05/2026 20:47

su203456 · 13/05/2026 20:11

Agreed. I just don’t think he will go for it. Egos and all that.

So you feel like it's right to stand up against DS's father's ego and argue he should subsume that for your DS's sake, but not to your fiance's ego? And the ego you won't stand up to is with the man you intend to live with (and have bring up your DC)?

JLou08 · 13/05/2026 20:48

su203456 · 13/05/2026 19:44

@BeardySchnauzer Thanks for your reply. I’m aware I would need father’s permission. However, wouldn’t it be the child’s best interest vs his dad’s ego?

I'd say it's more likely a judge would say it's in your child's best interest to keep your name and that if you and your partner want the same surname you should both let go of the ego and take your name as the married name.

GrannyAchingsShepherdsHut · 13/05/2026 20:49

If your DP is going to kick off about you not changing your name (that would actually be a deal breaker for me, but if it's not for you) you could double barrel your name only when you marry, so you share part of a name with all of them

ChakaKan · 13/05/2026 20:51

su203456 · 13/05/2026 20:23

Appreciate the insight everyone.
So options are…

  1. Keep mine and my sons name as is (good option but obviously feel a bit odd not having my daughters last name too)
  2. double barrelling names - but this also adds to complications later on as some have mentioned having to submit previous names etc?
  3. everyone takes my last name, this would be before my daughter is enrolled in school too which is a plus.

I feel Option 2 is best, but I would recommend that you (and preferably DP) double barrel your name and leave the kid’s names alone.

It is not in their best interests to change their names now. Getting married is your choice, but I think you should keep part of your own identity to support your son in accepting his.

FrankieMcGrath · 13/05/2026 20:52

Agreed @JLou08- I can’t believe you’re considering changing your name Op given how your son feels.

newusername4321 · 13/05/2026 20:54

Your son shouldn’t have to change his name, nor should he have to feel left out. And as a PP mentioned, what if you’ll divorce one day? Your son would be left with a name he doesn’t really have a connection with. Tbh you should put your son before your own desire to take your partners name, and keep your current name with him,

Newyearawaits · 13/05/2026 20:57

su203456 · 13/05/2026 19:44

@BeardySchnauzer Thanks for your reply. I’m aware I would need father’s permission. However, wouldn’t it be the child’s best interest vs his dad’s ego?

I think you need to carefully consider this.
Your son is likely too emotionally immature to make this decision formally right now.
And I wouldn't consider it fair on his bio dad.
Whatever the decision, it has to be in the best interest of the child.

StretchyWaistbandsOnly · 13/05/2026 20:59

Congratulations on the upcoming wedding 😊

I can completely see how this has happened so I'm not saying you are awful or anything (!), but I think you created the problem really by NOT giving DC2 your surname. So now you have a choice. Either one of the children changes, or you live with having a different surname to at least one of them, which I would not do. So, which child is easier to change.... It's got to be the youngest right? If soon-to-be-DH won't agree to that, then I absolutely wouldn't be taking his name on marriage and leaving DC1 as the odd one out, as he's already identified bless him. Actually, you will have a lot of talking and thinking to do if he shuts this down after you have explained your reasoning.

Good.luck x

Unexpectedlysinglemum · 13/05/2026 20:59

Clogblog · 13/05/2026 19:45

It would have been better to give both your kids your name and then your DH could have taken it too.

In fact, you could still do this if your fiancé would agree and not put his ego first

I agree 100% the baby should have mum and big brothers name don’t make your big boy an outsider and don’t change his name now that’s too weird

Unexpectedlysinglemum · 13/05/2026 21:00

StretchyWaistbandsOnly · 13/05/2026 20:59

Congratulations on the upcoming wedding 😊

I can completely see how this has happened so I'm not saying you are awful or anything (!), but I think you created the problem really by NOT giving DC2 your surname. So now you have a choice. Either one of the children changes, or you live with having a different surname to at least one of them, which I would not do. So, which child is easier to change.... It's got to be the youngest right? If soon-to-be-DH won't agree to that, then I absolutely wouldn't be taking his name on marriage and leaving DC1 as the odd one out, as he's already identified bless him. Actually, you will have a lot of talking and thinking to do if he shuts this down after you have explained your reasoning.

Good.luck x

Yes. He should put children above ego

su203456 · 13/05/2026 21:01

BeardySchnauzer · 13/05/2026 20:37

This makes it sound like you are trying to rewrite history a bit and creating a new family with the hope your ds’s bio dad will just disappear tbh!!

to make everything easy only change one persons name - yours - double barrel. Then you have a link to dd and a link to ds.

i also wouldn’t go down the ‘known as’ route as that can be an admin nightmare!

I disagree about rewriting history. If I didn’t care about his bio dad or wanted him to disappear he wouldn’t be named on the birth certificate in the first place? The assumption I’ve started a new family in the hope to make his bio dad disappear is a bit nuts tbh.

OP posts:
su203456 · 13/05/2026 21:03

RaspberryFeet · 13/05/2026 20:46

I just mean new family as in the family he has made. Rather than the family he was born in to.

I have re read now thank you. And I agree

OP posts:
Yellowheather · 13/05/2026 21:06

I agree with those saying best option is for YOU to double barrel. Won’t be an issue at all at school - oh look, it’s Mrs Smith-Brown, mum of Harry Smith in year 3, and Daisy Brown in reception. Fairest all round!

ChildrenOfTheQuorn · 13/05/2026 21:17

I mean...you created this issue by giving DD your fiancé's surname and looking to change your own. Utterly utterly bizarre choice in the circumstances. No I wouldn't be looking to change my son's surname but my daughter's.

Unexpectedlysinglemum · 13/05/2026 21:23

if you’re that keen to change your name you can either double barrel with your DH, or at least keep your surname as a middle name so you’re still linked to your son.

su203456 · 13/05/2026 21:47

UPDATE
I have spoken to my fiancé. He’s agreed to take my last name and change our daughters too. Once I explained some of the points written on the thread he realised it’s a good option. The other option we liked was double barrelling just my name so I’m connected to both children and partner. Thanks for all the replies and advice

OP posts:
Covermeinrainsrops · 13/05/2026 21:53

I have a DS who has his dad's name and two Dd with my DP they have his name. When we get married I'm not changing my name I just wouldn't feel right my son being the 'odd one out' and it would be me his mother doing that to him- so yes our home has three diff surnames and it's noones business so long as all children feel
the same

Ultravorls · 13/05/2026 21:57

I see where you’re coming from but I wouldn’t change your son’s name, and I wouldn’t change my own either (and didn’t, when I got married).

I see you’ve resolved it too - good solution!

MayasJamas · 13/05/2026 21:58

su203456 · 13/05/2026 21:47

UPDATE
I have spoken to my fiancé. He’s agreed to take my last name and change our daughters too. Once I explained some of the points written on the thread he realised it’s a good option. The other option we liked was double barrelling just my name so I’m connected to both children and partner. Thanks for all the replies and advice

Love this! An evolved man 🙏

ItTook9Years · 13/05/2026 22:00

su203456 · 13/05/2026 21:47

UPDATE
I have spoken to my fiancé. He’s agreed to take my last name and change our daughters too. Once I explained some of the points written on the thread he realised it’s a good option. The other option we liked was double barrelling just my name so I’m connected to both children and partner. Thanks for all the replies and advice

Don’t be the only one double barrelling! What does that say to your son?

ItTook9Years · 13/05/2026 22:00

MayasJamas · 13/05/2026 21:58

Love this! An evolved man 🙏

Only half way, but yes, it’s something. Till he speaks to his parents, of course.

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