My daughter just learned she shared 314 centimorgans with a boy we believed was her half brothers son.
I have just sent in my sample as the supposed father of her 50 year old half brother.

We are all stunned and embarrassed by our ignorance. I guess I need help because if my daughter in not the young man's half nephew how can I be the father of her half brother?

Am I in for more surprises?

I am not to good at all this and perhaps am not making it clear.

For 46 years I was told this person was my son. It happened when I was a teenager and before I was married. No blood test but just believed what I was told.

Now out of the blue my daughters are on 23andMe and a name pops up linking them as possible 1cousin1removed or second cousin. It was the son of the man I am supposed to have fathered.

My daughters 314/325 centimorgans took them out of the half-Aunt catagory.

I sent my DNA in and it came back 999cMs. Telling me I was his great Uncle.

My question is if my daughters aren't half-Aunts how can I be the boys grandfather as the story that has been told for 46 years.

Doesn't the cMs puzzle have to fit for all relationship categories?

I am new to this and don't grasp it well.