Related but not directly.
A friend of mine was adopting a kid many years ago. I was asking him about it, and he answered some obvious questions. But, then he declined more questions. He said that he didn't want his son to grow up with the family-friends around him knowing more about his birth-family than he did. He wanted to leave some secrets for his son to share if and when he wanted to.
I thought it showed a lot of respect for the independence of his son, even as an infant, to have some stories that don't need to be made public.
-John