Statements as well as the behavior of the baby similar to the deceased ancestor is made to confirm the identity of who the child was in their past life.
Oracles can also confirm the identity of the baby in their past life.
These class of beings are called Ogbanje, that is one that goes and comes back.
[2] Ogbanje are the negative or evil spirits that are reincarnated to cause misfortune to the family by constantly dying and coming back again.
This article relating to an African myth or legend is a stub.