Well I have the information you need, but I have been trying to find out who was ripping it off for the previous years. My mother and her brorther (now deceased) where the oldest living heirs. In the 1950s Shell oil and an attorney John Cobb of Gretna contacted all heirs (everybody and their distant cousins) which was not how it is done, and each person hired him as their attorney to protect their claim--this was intended to make him rich in attorney's fees and because the fees from so many ended up being more than the royalties he would have taken the property for nonpayment of fees. The state of Louisiana came to the rescue and stopped all activities and John Cobb's scam. No one could touch it or drill without the consent of the state of LA. Now my uncle and my mom (who trusted my uncle's attorny if he really consulted with one) signed a lease with Shell oil --at least three years ago and have not seen a dime. My mom said she did not know they should have paid her for the lease (she is 88 yrs. old). I have the map and letter from Shell oil --I am going to try and get some information'
PS I would love to find out where to locate the family tree.