Biological Father
I see a lot of stories about people finding out that their parents weren’t the people raising them, and this one is a little bit different. My dad always thought his father who raised him wasn’t his biological dad, and the father thought the same.
He was treated terribly by his father because the father was told he couldn’t have children and my father was born prematurely (but at a healthy weight).
So, everyone assumed my grandmother had an affair and got pregnant with my dad. It was to the point that after my grandmother passed on, my grandfather failed to even mention to his new wife that he had a son and grandchild (me).
Years later, my dad gets an AncestryDNA test for him and me. He actually finds out that his dad was, in fact, his biological father.
It was shocking and sad. Story credit: Reddit / OwnBackground6676