How can I be recognized as heirs of property that was leased to a profitable business for decades?

My mother has found that her great uncle still owns land in Skippers, Virginia. He did not sell his land but leased out to a profitable company. It has been years and our family needs to be recognized as heirs of this property. No payments have been made in years of this property being profitable for many companies. I need a lawyer to look into the establishing ownership of this land and any restitution owed.