If a person proved they had reincarnated, could they reclaim ownership of property they owned in a previous life? And if, say, a corporation or a householder now occupied their land, could they charge rent?

I cannot answer your question, since (whilst I have an open mind on reincarnation) I cannot believe that past life ownership is provable.

BUT, I worked in Tel Aviv for a while.

50, 60, 70+ years ago the Palestinians who owned and lived in a lot of properties there left, presumably hoping one day to come back.

Those houses are still empty, decaying and (sortof) un-owned (unless the grandchildren of the original owners choose to return).

You don't need re-incarnation to reclaim ownership......

It's bad enough the way families "vulture" over possessions when the still breathing are breathing! I can't imagine the fights that would go on with in families if a loved one came back to claim their property!

Interesting.

In the movie Highlander (The film features a number of flashback scenes establishing Connor MacLeod of the Clan MacLeod's early history, and builds up to his final destiny among the last of the mysterious Immortals) Connors's final identity was Russell Edwin Nash (nom de plume) .

He maintained his assets by leaving them to the subsequent identify prior to the final "Gathering."

This would imply a quit claim deed process.

I would assume (an admitted dangerous position) that laws are some how written that ownership is terminated by death (although distribution of our assets at death is provided for).

And since death would be required (?) in order to reincarnate, I presume ownership rights would cease at that time.

(Sounds logical, but whether it meets the tests of valid logic depends on the accuracy of one's predications.)

I have pondered your question for a day or so. What little I know of the intricate aspects of reincarnation bring me to believe, unless you made some sort of private arrangements beforehand  you are out of luck. What once beloned to you in a prior life follows it's destiney upon your death.

Your claim to land does with you. You can not and should not be able to reclaim anything, you died rights died.

Otherwise, no one else assuming reincarnation is even possible you could continue to come back over and over and over again for eternity and claim the same land,  inheritance, money and whatever else never relinquishing "your" right to someone else.

When would eternal ownship start?