I don't know as I have anything exactly like this. But I also have little memory of my childhood. (And the older I get, the more I lose.) I was an only child. So there are no siblings who can share memories. I have quite a lot of memory "fragments" that crop up now-&-again. But I have no idea how accurate they are, or even if they happened at all, in some cases.

I like to read about brain research findings. And one thing that keeps coming up is that our memories are much less reliable than we would typically like to imagine. So, personally, I tend to be cautious with regard to anything that comes up in the way of memories.