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Samuel S Griffin III

Samuel S Griffin III

Houston, Texas

Samuel S. Griffin, III, 58, is co-founder of Griffin & Matthews.  In his over thirty-eight (38) years of practice, Sam has engaged in a general civil practice focusing on business and transactional related matters, insurance defense litigation, and commercial litigation.  He has represented a wide variety of clients with issues related to personal injury, real estate, corporate law, commercial litigation, estate planning and probate, and insurance defense litigation.  His client base is made up of publicly traded and privately held businesses and individuals in a multitude of disciplines.  Representative clients include E&P/drilling/downhole technology companies, construction, plumbing/electrical contractors, manufacturing/industrial processing companies, commercial/residential development companies, ranching/commercial grower enterprises, technology developers, financial institutions, and service companies of multiple types including CPAs, attorneys, physicians, business/marketing consultants, sales/distribution representatives, etc.  Additionally, for over 35 years, he has represented multiple insurance companies and their policy holders by defending claims ranging from wrongful death, to errors and omissions, to property/casualty losses.

Mr. Griffin is a private pilot. He has also been a licensed real estate broker since 1980. He co-founded Griffin Development, LLC a real estate development firm with commercial and residential projects in Houston, Austin, west Texas, the Rio Grande Valley, and Vail, Colorado. He currently serves as President and Director of a property owners association, and he was previously on the board of an HOA serving over 1,500 residences. 

Mr. Griffin serves as Director of Scandrill, Inc. a land drilling services company with rigs working for major oil and gas exploration companies in the Ark-La-Tex and Permian Basin. He is also a Director of Unmanned Ad-Hoc Industries, Inc., a global data collection company specializing in unmanned aerial vehicles and their application to the energy, wind, telecommunications, security, and construction sectors. Mr. Griffin is honored to have served as a director of Caymus Energy Fund Offshore, Ltd., a market-neutral equity fund focusing on domestic companies in the energy industry engaged in the exploration and production of oil and gas and other natural resources; Impact Guidance Systems, Inc., a developer of high quality intelligent downhole tools for the drilling/completions and data acquisition aspects for the oil & gas industry; and, ResTech, Inc., a multiple disciplinary reservoir evaluation services company specializing in the integration and interrogation of subsurface data used in the upstream oil and gas industry.

Areas of Practice

  • 50% Litigation
  • 50% Transactional

Bar Admissions

  • U.S. District Court Western District of Texas, 1990
  • U.S. District Court Eastern District of Texas, 1989
  • U.S. Court of Appeals 5th Circuit, 1989
  • U.S. Supreme Court, 1989
  • U.S. District Court Southern District of Texas, 1988
  • Texas, 1979


  • South Texas College of Law, Houston, Texas
    • Honors: Dean's List
  • Southwestern University, Georgetown, Texas
    • B.A. - 1975
    • Major: Government and Economics


  • Choice of Entity, University of Houston Law Center Continuing Legal Education Program
  • Forming, Operating, and Dissolving the Texas Corporation, State Bar of Texas
  • The Grape Contract - Pay Me Now or Pay Me Later, 20th Annual Gulf Coast Grape Grower Field Day

Professional Associations and Memberships

  • American Bar Association, Member
  • Houston Bar Association, Member
  • National Association of Realtors, Member
  • Texas Association of Realtors, Member
  • Houston Association of Realtors, Member
  • Airplane Owner and Pilots Association, Member

Ancillary Businesses

  • Griffin Development, LLC
  • Aero-Rey, LLC
  • S&J Ranches, LLC