Greetings and Welcome, Noslord,
Yes, many people here have a strong sense of who they were previously but I don't know how to proove it.
If you are getting a sense of who you might have been, you might be wise to keep a log/ journal of what reminders you've had--dreams, newsclippings, anything that made your heart jump at the thought. Gradually the pieces form a whole that cannot be denied.
Any non-physical explorations require a pure heart and healthy body--not 100% but cleared more than clutterred. meditation, less meat, etc etc. have you done any of that yet? It's hard to tell what stage you're at since this is your first post.
If you could say anymore about yourself or your search, someone with that type of experience could give you more sepcific information.
It's an interesting search and more interersting is the spiritual reality you will become involved with as a side effect of your search!
Bets