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Ethical dilemmas

Ancestry results= family bombshell??

523 replies

SqueakyRadish · 28/11/2025 08:50

Hey!
So... I did an ancestry thing just for fun, thought it would be cool to see my heritage etc.

Had my results back last week and it has "matched" me with another user that I share 27% of my DNA with, who it suggests is a half sibling or niece.

The most likely explanation (due to various factors) is that this is a niece.

But what the actual fuck do I do now? I feel awful because I know this and, as far as I know, nobody else in the family does.

I have one brother who has no children (or so I thought!) but who has been living, happily, with his partner and her 2 children for around 10 years.

He could have no idea? He could know and just want to keep it secret? He could know and other people in the family might know but keep it secret?

I literally just don't know what to do. I feel like I can't ask anyone in my family for advice because then I'm putting it on them as well.

Plus, if this other person does not want to be contacted or have anything to do with us then it feels like it would be better to just keep things as they are and do nothing at all.

I don't really know what I want... I just needed somewhere to talk about this and figure out what, if anything, I do next...

OP posts:
CatsorDogsrule · 28/11/2025 15:57

DNADiscoveries · 28/11/2025 13:15

OP, I would say you have to speak with your brother now (or maybe wait till after Christmas!).

My parents and two siblings did DNA tests a few years ago - bit of fun, we thought (naively!), our family was very straightforward, we thought. And so it was, till this summer when up pops a hitherto unknown first cousin (I thought I only had one).

I got in touch with the first cousin who replied saying they'd love to chat, but has since not responded to the small handful of very gentle follow-up messages I've sent (I've stopped now, ball's in their court - I know we're decent, sensible, kind people and if they don't want to be in touch for whatever reason, we respect that, though we'd obviously love to understand more about how we've come to be related).

It basically means that my mum has a full sibling she knew nothing about - because this new cousin was born after her only known-about sibling died - so she has a brother or sister somewhere (likely a brother, we think) who may still be alive, but no real way of knowing for sure.

For those saying don't say anything to your brother, OP, I would really think about it. If he does a DNA test in future, he will see that you are matched with this person. But even if he doesn't, I think it's better to be open about stuff like this, because it is so discombobulating to find it out when everyone in your life who might have been able to help you understand has died.

I had a first cousin match, who was actually my half-aunt, so it may not be due to an unknown full sibling.

My grandad had another child during his second marriage. He raised her as his step-child, and we'll never know if they knew the truth. My half-aunt didn't know until she matched with me and my dad, her half- brother, on ancestry. It was a welcome surprise to the family, especially her.

Happyclouds19 · 28/11/2025 15:59

Aluna · 28/11/2025 15:50

This doesn’t even make sense. There’s many reasons for moving stones in rivers and you certainly don’t need to know what’s underneath. But if you wanted to know what was underneath you’d pick it up and have a look. 🙃

It’s a proverb, fitting for the conversation.

Translation: don’t poke into what isn’t yours.
Modern advice: Don’t ruin other people’s lives to feed the soap opera-hungry crowd online.
But if your goal is to encourage OP to stir family chaos for anonymous gossip, carry on. 🙃

Floundering66 · 28/11/2025 16:03

I’d probably tell my brother quietly and go from there. If he knows and doesn’t want to be involved, then I wouldnt communicate with the match. If he doesn’t know, let him have time and space to make his own decision. Explain that you’re only telling him as you are worried he doesn’t know and couldn’t keep something like that from him, but you won’t tell the rest of the family.

DNADiscoveries · 28/11/2025 16:06

CatsorDogsrule · 28/11/2025 15:57

I had a first cousin match, who was actually my half-aunt, so it may not be due to an unknown full sibling.

My grandad had another child during his second marriage. He raised her as his step-child, and we'll never know if they knew the truth. My half-aunt didn't know until she matched with me and my dad, her half- brother, on ancestry. It was a welcome surprise to the family, especially her.

Oh, thank you for that perspective - am glad it was a welcome surprise for your family! It's interesting, yes, throws a different light on it if it's a different relationship from the one being presented as most likely. Need to think about what that potentially could be in this situation as my mum is showing as full aunt to this first cousin too, which took us down the road of her having a full sibling somehow. And the first cousin I thought I had is showing as my mum being half aunt and half first cousin to my siblings and me. It's all very confusing!

TranscendentTiger · 28/11/2025 16:07

I don't know if it's already been suggested, but there's a great podcast called "The Gift" that deals with this type of situation. It's well worth a listen while you decide what to do.

ChildrenOfTheQuorn · 28/11/2025 16:10

My husband found out he had an unknown cousin through Ancestry. His uncle didn't know he had had a child as the mother had kept it a secret. My DH asked his mum to break the news. There have been some meetups since and I suppose a happy ending out it all?

PinkPanther57 · 28/11/2025 16:15

OP, how many cm is the match?

junglejunglebear · 28/11/2025 16:15

Happyclouds19 · 28/11/2025 15:59

It’s a proverb, fitting for the conversation.

Translation: don’t poke into what isn’t yours.
Modern advice: Don’t ruin other people’s lives to feed the soap opera-hungry crowd online.
But if your goal is to encourage OP to stir family chaos for anonymous gossip, carry on. 🙃

Fools rush in where angels fear to tread also seems apt

selffellatingouroborosofhate · 28/11/2025 16:18

shuggles · 28/11/2025 14:24

I don't think concealing that is the best way to address the problem.

Forcing a disclosure before a birth, shortly after a birth, or at any other time is not a good way to address that problem.

There are women out there whose husbands, fathers, or brothers would literally murder them for being the victim of a rape. The cute euphemism used is "honour killing". We might think those men are savages who shouldn't act like that, but it's the women who pay the price when they do and the women who need to be protected.

Bridesmaidorexfriend · 28/11/2025 16:19

I’d tell my brother, either he will know or he won’t and will want to know

Jollyjoy · 28/11/2025 16:29

I think since she’s contacted you, can’t you just get a bit more information from her? Ie be open that you don’t know ‘the story’ and ask if she could say a bit more? Then you will have information with which to decide next steps, without impacting others yet. Also you can show kindness and compassion to her to make it a worthwhile interaction for her.

AntikytheraMech · 28/11/2025 16:29

shuggles · 28/11/2025 12:37

@SqueakyRadish Paternity tests should routinely be performed on all babies to avoid this kind of nonsense.

Both DNA testing at birth to look for potential illnesses and also compulsory parental DNA testing to confirm the parents are who they claim they are.
It can destroy lives if a partner or a child finds out their child / father is not actually genetically or family linked to them.

selffellatingouroborosofhate · 28/11/2025 16:46

AntikytheraMech · 28/11/2025 16:29

Both DNA testing at birth to look for potential illnesses and also compulsory parental DNA testing to confirm the parents are who they claim they are.
It can destroy lives if a partner or a child finds out their child / father is not actually genetically or family linked to them.

Again, some children conceived in marriage are the product of rape by a third party and the woman's life may be at risk if the rape becomes known to her spouse or family. You have no right to demand a policy that risks women's lives like that.

Such a policy is also discriminatory against Jews because of the profound consequences to a child who is found to be a mamzer and all that child's descendents, forever.

junglejunglebear · 28/11/2025 16:49

AntikytheraMech · 28/11/2025 16:29

Both DNA testing at birth to look for potential illnesses and also compulsory parental DNA testing to confirm the parents are who they claim they are.
It can destroy lives if a partner or a child finds out their child / father is not actually genetically or family linked to them.

No one has answered this yet, but how do you suggest we identify the true father if the mother won't say/doesn't know/can't remember?

BusyLight · 28/11/2025 17:17

Happyclouds19 · 28/11/2025 15:45

Do not remove a stone from the river unless you know what lies beneath.

What I’m saying is, your truth may only be a shadow of the whole. Some doors are locked for a reason. You have one brother, or, you think you do. Reality bends to perception, and perception is rarely the full story. There could be so much more at play here.

Edited

Nonsense, times have moved on, information cannot be hidden, those days have gone.

New generations will have to accept things cannot be covered indefinitely, whatever the reasons for hiding the parentage of a child, I'm afraid those facts will have to be taken into account when you procreate, I'm sure newer generations will have the ability to cope with this.

This girl actively put her details onto a genetics site, aparently she knows who her father is, it does sound like maybe she's affraid of upsetting her mother or unsuspecting father of the truth.

This girl has every right to know who her real parents are, no matter who this upsets.

cupfinalchaos · 28/11/2025 17:34

This happened to my dh. Found out he has a half-sister. His dad died 30 years ago so we’ll never get answers. The truth is, it would have been better for my family to have never found out.. she’s bought nothing but turmoil.

AntikytheraMech · 28/11/2025 17:44

junglejunglebear · 28/11/2025 16:49

No one has answered this yet, but how do you suggest we identify the true father if the mother won't say/doesn't know/can't remember?

If the baby is DNA tested at birth then a paternal DNA test is easy to integrate into it to make sure he is the father that he will be paying for for the next 18 years.

BusyLight · 28/11/2025 17:48

Yes, this is how it will be, most men would not want to pay for a child who is not theirs.

ZoeCM · 28/11/2025 17:50

TheQuirkyMaker · 28/11/2025 09:49

When I was a nurse in Wales 40 years ago, I was told one third of children were estimated to be born to males outside of the family, without the family knowing. Best not to know.

I really don't believe that many women cheat. And even if they do, how many would then trick their partner into believing the baby is his instead of having an abortion?

selffellatingouroborosofhate · 28/11/2025 17:51

AntikytheraMech · 28/11/2025 17:44

If the baby is DNA tested at birth then a paternal DNA test is easy to integrate into it to make sure he is the father that he will be paying for for the next 18 years.

A paternal DNA test can only confirm whether Man A is or is not the father if the following three conditions are all true:

  1. the mother is willing to name Man A,
  2. the mother is able to name Man A, and
  3. Man A is willing to give a DNA sample.

In the case of a one-night-stand, the mother might not know who Man A is, preventing (2).

In the case of a rape, she might not know or might not want to say, preventing (1) and (2). If her family are the "honour killing" type, it could risk her life to say. If she's Jewish, disclosing a rape could deny her child and all its descendents marriage within the Jewish community.

Acommonreader · 28/11/2025 17:51

SqueakyRadish · 28/11/2025 11:06

Sorry, I had a gym class to go to and there have been so many replies since I left!!

To answer a few questions:

She is between 19-29, so a sensible age to potentially be my brother's child.

If she is a half sibling, she would have to be my dad's, because I'd have noticed if my mum was pregnant!

Ancestry says that the DNA matches both sides. I don't know enough about DNA to know how they know this, other than presumably they can tell which of my DNA is from which parent, and they can see that she has some of both??

I only have one sibling (my brother) that I know of. I guess it's possible that we have an unknown sibling that neither of us are aware of who could have had this child which would then make her my niece.

The biggest news is that she has messaged me! So now I'm super paranoid that she's on here!?

She said that she knows "the story" but it isn't just hers to share and she knows who her dad is but has no relationship with him.

So, it doesn't seem like she's particularly interested in finding out more about him. I'm assuming this means he likely knows about her and has chosen not to share this within the family, which I will respect. I do wonder if I should still bring it up with him though, because if anyone else does a test they're going to find out

Just checking that you know that this is on mumsnet.com social media ? I saw it on facebook this afternoon. Your relation probably did too.

shuggles · 28/11/2025 17:53

@selffellatingouroborosofhate There are women out there whose husbands, fathers, or brothers would literally murder them for being the victim of a rape. The cute euphemism used is "honour killing".

Perhaps instead of using the existence of those men to justify children not knowing who their father is, we should lock those men up so that they no longer pose a threat to society.

selffellatingouroborosofhate · 28/11/2025 17:56

shuggles · 28/11/2025 17:53

@selffellatingouroborosofhate There are women out there whose husbands, fathers, or brothers would literally murder them for being the victim of a rape. The cute euphemism used is "honour killing".

Perhaps instead of using the existence of those men to justify children not knowing who their father is, we should lock those men up so that they no longer pose a threat to society.

The problem with that plan is that they have to kill at least once before we can lock them up. Can you honestly not see how this is dangerous to women?

HonoriaBulstrode · 28/11/2025 17:57

Perhaps instead of using the existence of those men to justify children not knowing who their father is, we should lock those men up so that they no longer pose a threat to society.

How do you know who they are?

And demonstrating that a particular man is not the father of a child doesn't tell you who is the father. The mother herself may not know who is the father.

dnadiscoveryquery · 28/11/2025 17:58

This happened to me, only I found out my dad isn’t my bio Dad. It’s been horrendous, but I’ve not said a word as my parents have been married 60 years. It would break my Dads heart.

It’s been three years and I’ve learned to live with it, though it’s not easy as I have two half sisters out there who know nothing about me! Maybe one day when no one will get hurt.

My newly found bio dad died in the 90’s. I am in touch with his sister I matched with, and I trust her, she’s lovely. But otherwise it’s under wraps for the better good.

A blinking bombshell of a shock though!!!