Marshall focuses his practice on appellate law and government relations. Prior to joining Butler Snow, Marshall clerked at both of Texas’s high courts: the Supreme Court of Texas and the Texas Court of Criminal Appeals. Marshall also worked as a public affairs consultant and in public policy in the Texas Legislature.  Now in private practice, Marshall applies his acute understanding of appellate and legislative procedure to assist clients with complex problems before and during all stages of litigation.

Biography – View PDF Bio

Narrative Bio

Marshall’s experience includes representing businesses, government entities, and individuals in a wide variety of appellate matters in the Texas intermediate appellate courts, the Supreme Court of Texas, and the United States Court of Appeals for the Fifth Circuit.  Marshall has also advised clients on legislative and regulatory procedure and represented businesses and individuals before the Texas Legislature and Texas state agencies.

He frequently speaks and writes about topics related to appellate law.  Recently, he co-authored an article on marking use of dissenting opinions for DRI’s Certworthy, presented a Texas Supreme Court update to the Austin Bar Association’s Civil Appellate Section, and was a guest on the Texas Appellate Law Podcast.  Marshall also published an article in the St. Mary’s Law Journal addressing a significant split among the United States Courts of Appeals regarding the proper legal standard to be applied in cases involving the taking of migratory birds.

Marshall is an active member of his community.  He currently serves as a Commissioner on the City of Austin Electric Utility Commission, Secretary of the Board of Trustees for the Shield-Ayres Foundation, and on the Boards of Directors for Shield Ranch Foundation, the Texas Advocacy Project, and the Texas Agricultural Land Trust, where he also chairs the Policy Committee.  He is a founder and member of the Board of Directors of the Regents Alumni Network and has served as a mock trial coach at two different schools in the Austin area.  He is also a member of the State Bar of Texas (Appellate Section), College of the State Bar of Texas, the Austin Bar Association (Civil Appellate Section and Austin Young Lawyer’s Association), the Aggie Bar Association, and the Federalist Society.  Marshall is also a member of the Barbara Jordan Inn of Court.

Marshall obtained his J.D., cum laude, from St. Mary University School of Law, where he was the Solicitations/Articles Editor of the St. Mary’s Law Journal and received the Staff Writer Excellence Award along with the St. Mary’s University Presidential Award. He also holds an M.A. in Theology from St. Mary’s University, with honors, and a B.A. in Political Science from Texas A&M University, where he was a member of the Student Government Association Executive Council. He is admitted to the State Bar of Texas.


Bar Admissions

  • Texas, 2018
  • U.S. District Courts
    • Texas: Western
  • U.S. Court of Appeals
    • 5th Circuit

Civic Involvement

  • Commissioner, City of Austin Electric Utility Commission, 2021-Present
  • Secretary, Board of Trustees, Shield-Ayres Foundation, 2014-Present
  • Board Member, Shield Ranch Foundation, 2021-Present
  • Board Member, Texas Agricultural Land Trust, 2020-Present
    • Chair, Policy Committee, 2021-Present
  • Board Member, Texas Advocacy Project, 2020-Present
  • Regents School of Austin
    • Founder and Board Member, Regents Alumni Network, 2013-Present
    • Former Volunteer Mock Trial Coach

Education & Honors

  • St. Mary’s University School of Law, J.D., cum laude, 2018
    • Solicitations/Articles Editor, St. Mary’s Law Journal
    • Staff Writer Excellence Award, St. Mary’s Law Journal
    • St. Mary’s University Presidential Award
    • Pupil, William S. Sessions Inn of Court
    • Dean’s List
    • Teaching Assistant, Legal Research and Writing
    • St. Mary’s Institute on World Legal Problems, Innsbruck, Austria
  • St. Mary’s University, M.A., Theology, 2018
    • Distinguished Graduate
  • Texas A&M University, B.A., Political Science, 2012
    • Student Government Association Executive Council
  • Clerkship, Honorable Kevin Patrick Yeary, Texas Court of Criminal Appeals, September 2018-September 2019
  • Clerkship, Honorable Paul W. Green, Supreme Court of Texas, September 2019-August 2020


  • Marshall’s appellate experience includes full merits briefing in the United States Court of Appeals for the Fifth Circuit, the Supreme Court of Texas, and several intermediate appellate courts in Texas.  Additionally, Marshall has assisted several litigation teams with pre-trial legal analysis and strategy from an appellate perspective.
  • Marshall has also assisted clients in navigating the legislative and regulatory process, including drafting and facilitating the filing of proposed legislation, arranging client testimony at legislative hearings, providing legal counsel on pending legislation, and assisting clients in responding to regulatory enforcement actions.
  • Marshall’s litigation experience also includes assisting clients in responding to grand jury subpoenas, drafting pre-trial dispositive motions in a number of state and federal cases, and assisting clients in responding to discovery requests.
  • Legislative Director for Texas State Representative Brooks Landgraf, 84th Legislative Session (2015)
  • Government Affairs Consultant, Caddo Associates (2012­–2015)

Papers, Presentations, & Publications

  • ​Presenter, “Delta What? Procedural Rulemaking Issues and the Battle over Hemp Derived Cannabinoids,” TexasBarCLE, April 27, 2022.
  • Presenter, “This is Not a Drill: Emergency Relief in Texas Appellate Courts,” Austin Bar Association, April 22, 2022.
  • ​Presenter, “Appellate Mistakes in Trial Courts,” Denton County Bench Bar Conference, April 1, 2022.
  • Guest, “A Peek Behind the Appellate Curtain,” Beyond Hourly with Omni Bridgeway Podcast, August 30, 2021.
  • Guest, “Taking it to the Next Level,” Embrace Your Strengths Podcast, July 13, 2021.
  • ​Co-Author, “Making Use of Dissenting Opinions,” DRI, Certworthy, Vol. 21, Issue 2, November 23, 2020.
  • Presenter, “Texas Supreme Court Update,” Austin Bar Association, Civil Appellate
    Section, November 19, 2020.
  • Guest, “Clerking at the Texas Court of Criminal Appeals and the Texas Supreme Court,” Texas Appellate Law Podcast, October 1, 2020.
  • Author, Avian Jurisprudence and the Protection of Migratory Birds in North America, 49 ST. MARY’S L.J. 837 (2018).