What happens when a Will is not probated; do the beneficiaries have rights?

It's quite possible, if you haven't let this go for too long.  It also depends on how the land was titled, whose name or names were on the deed when your mother passed away.  If the land was owned by your parents as husband and wife, then the will doesn't matter, the property never went into the estate that should have been probated, and your father became the full owner at your mother's death.

But, if it works out that you should have gotten the land, under the will, there should be a good chance of getting it back.  You need to contact an attorney, in the part of Tennessee where the land is located, who does wills and estates law.  And you need to do that as soon as you possibly can.  One place to look for a lawyer in another state is our website, http://attorneypages.com