I'm not so inclined to believe the modern notion of reincarnation exists, as whole people dying and returning, over and over again.
I'm an animist. I believe we are born out of this world. The components of us, physically and spiritually, only come from this world (seen and unseen alike). The person we are now? It ceases to exist, as I call it, the breath soul.
What does persist is the Wandering Soul, or Fetch. It is the fairy. It sinks deeper and deeper into the underworld, Elphame, and becomes an aspect of nature. There can be the occasional reincarnation, but I feel this is a rarity, not the norm.