Have you ever watched that series “The Ghost Inside my Child?” It’s overdramatized to the point of being stupid, but the stories are pretty interesting. I saw one of a boy who remembered being burned alive in a plane, WWII era. Another one of a boy who remembers falling from a city skyscraper that was on fire. (That child had formed an unexplained phobia of tall glass buildings.) Some of them even recall their names. Usually the memories begin around age 2-3 and fade out by age 7-8 years old, when they become fully involved in the new life. It’s almost always a memory of a life that was ended suddenly and violently.
I saw that a couple of years ago, fascinating!