A friend of mine has what we are pretty sure is a legitimate cradle memory. When he was born his skull was asymmetrical. Enough that he wore some kind of a head brace in the cradle (it must have worked because he was a model for a number of years lol). I was there when he told his mother about it (assuming it was a dream or something) and she basically confirmed the memory and that they had never told him about it assuming he wouldn’t remember.