OP is a giant A-hole. She is acting like the fact her dad stepped up and became a non-bio father to her brother starting before he was born is somehow 'shameful'' where i see it as wonderful.

Learning the reasons behind the decades of rejection would be an even stronger argument for me to split the money and give it to my real family. Just in spite of those cruel, idiotic beliefs of my grandparents. I would feel devastated and betrayed on behalf of my brother, and father. I would do anything in my power to show them that I don't accept grandparents' way of thinking in the slightest, and that I feel a new pride to be my father's daughter.

It never ceases to amaze me just how quickly and easily people switch from "oh yeah, family, family is everything, we all look out for each other because that's what family is about, right family?" to abandoning all their morals and throwing their family under the bus all over, what, the few quid left in granddaddy's pocket when he dropped dead in the middle of ASDA? F**k off. Being raised as a ward of the state wasn't perhaps the best experience ever, but when I see this, the never ending horror stories just like it which are always in the media, things that happed to people I know, s**t that's gone on with certain branches of our in-laws etc, it makes me glad that our family consists of only people we love and who choose to be part of it.

I think this woman probrably knows that her grandparents are a******s, but is looking for an excuse to keep the money - it's probrably going to be a major windfall that pays of any student debt, and lets her put a sizable deposit on a house. But yeah, avoiding discussing it is for sure an a*****e move. She needs to take the letter, and go and have a sitdown with her parents first and get their side of the story. Her grandparents may have been wrong. It could have been "We met, love at first sight, the pregnancy was an accident, but we were thrilled. It happened so fast, and your mum was just out of another relationship - your grandparents never believed the baby was mine." Then they all need to tell her brother. Legally, she can probrably keep the money. But if she doesn't talk to her dad and brother, she's siding with the a******s, and may destroy her family relationships.

If my father decided to give the inheritance directly to my children, it's really not my place to demand my children give it to me. I wouldn't even ask. That money was never mine. It was my father's to do with as he pleases. Ironically, earlier today, before I ever saw this, I told my wife that if my father chooses to leave everything to my stepmother, I'm fine with it, and if she chooses to leave everything to my sister, I'm still fine with it. They can do what they want with their money. However, I think grandfather was an enormous a*****e. Doesn't matter if the kid is his or not. If he loves the woman and wants to adopt the kid, why not be happy for him?

YTA. Even though your brother is not biologically related to your father, your father is still his dad. He raised your brother. The fact that your grandfather disowned his child after he married a woman he loved, even if she was pregnant with a child at the time, is just messed up. And then on top of that, your grandmother is still upset even though many years have gone by. What gets me is that your family did nothing by wrong. Your father fell in love with your mother, so much that he didn’t care that she was pregnant. Your brother did nothing wrong and has no knowledge he was adopted by your father. And your mother. Why is your grandmother upset with her? Because she was dating another man before your father and realized he wasn’t the one. Again, YTA for drinking the koolaid and choosing money over your family, because of something 30 years ago.

Your dad gave a child a father and treated him like his own - what's the problem? The problem is that OP is a money grabbing scumbag who takes after her grandfather, apparently! YTA MASSIVELY!

My family lived through this exact situation. Found out my mom is not my grandfather's biological daughter, my grandmother was already pregnant when they met. My grandfather still decided to marry my grandmother and went on to have a daughter (my aunt) with her. We only found out several years after my grandmother's death, and for my mom, so many things in the family started to click. Why she was treated differently by the rest of the family than her sister, etc. Thankfully my grandfather's parents never seemed to have an issue with my mom having a different father, and when inheritance was passed down it was done equally between my mom and her sister. OP is truly horrible to be thinking about continuing her grandparents cruelty and exclusion, especially because although she and her brother don't share a biological father, they share a mother, he is still her brother!!

Why do I get the feeling OP has always been entitled/selfish and is now using this bs to continue and not share the inheritance? One of the few times I hope there's a basis on which to challenge the will.

This is one of the few inheritance AITAs that I'd consider going against the wishes of the deceased family member. Grandma didn't have to do this and she didn't care that it might break up OPs family. Her "being right" was more important than anything and she still had to stick the knife in at the end. Yes, Dad should have told them the truth, but consider how much judgement and pain he got from his parents- obviously he'd be hesitant to be open about it. If Dad and Bro are good people I'd share the inheritance just to spite the Grandparents.

So op was close to her brother and dad but now she has money she is like f**k you clearly money means more than family her brother always assumed he was blood so this must be a huge dissapoinment for him to feel the neglect from grandmother despite not knowing what he did wrong at least this shows everyone what op is like

I'm 90% YTA but also can't help thinking how long she has been lied to about her brother.