My New Aunt/Wife

My uncle Donald 68 got married again to a younger woman 24, he bought from her family in fact. That's what he told me, I David 30 his only living relative and I run his businesses for him. On his wedding night his health got worse, he blacked out and was put in hospital and told not to take his little blue pills anymore and so he had a wife he couldn't fuck, he couldn't remember whether or not he had fucked at all. He hadn't, how do I know that his new wife told me. He passed out before he got started, his black out was caused by his blood pressure and the little blue pill he had taken. He couldn't remember much about what happened. As his new wife was intended to provide him with a child, her marriage was based on her delivering him an heir. No sex no heir, I knew that and so to keep my uncle calm and relaxed I fucked my aunt while he was in hospital, and she got pregnant. Confirmed before he got out of hospital, he didn't that it was going to be a girl and not a boy as he had wanted. Due to his health he had to sleep alone, and I kept his wife company. His health wasn't improving any either and he only survived long enough to see what he thought was his daughter. A massive heart attack finished him, and I was legal guardian of my daughter. Six months after his funeral I married my aunt and now twelve years later I've 5 children by her and we're quite happy. I sold off his businesses and retired to raise my family. My first daughter doesn't know about the deception at the time of her birth as my name is on the birth certificate. I can say I made my uncle's last month's very happy as he believed he had a child at last. Otherwise, he might have passed away much earlier.