Anyone know how to contact L.Clay Fisher in Houston Texas?

He had leases with my grandparents, various 130-plus acres. They have passed them down—the mineral rights and surface rights—to us grandchildren. We reside in Washington State. The acreage is in Starr County, Texas. I have requested a title, lien, and tax search on the information I have to get the ball rolling. Any information would be appreciated. Thank you Lone Star in WA