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Geoffrey C. Sansom

Houston probate lawyer Geoffrey C. Sansom is of counsel to Matthews & Associates. He is rated AV-Preeminent by Martindale-Hubbell for 2019 – the highest possible rating – by both the judiciary and his peers. He was also awarded those highest honors from 2015-2018. In 2018, he was also nominated for the Board of Texas Adult Protective Services. He was chosen as a Rising Star in 2014 by Texas SuperLawyers and was honored as a SuperLawyer n in 2015.

Meet the Team

Probate Help in Texas and Nationwide

Geoff Sansom handles probate law, guardianship, estate planning, mental health or psychiatric commitment cases in Texas, and general civil litigation. He also handles same-sex estate planning and probate in Texas and manages a substantial probate and guardianship caseload across the country. Mr. Sansom handles all forms of testate and intestate succession, as well as both bringing suit against and defending executors, administrators, trustees, and guardians. He has successfully litigated hundreds of cases in both state and federal court. He works hard to resolve cases without going to trial, but he will move swiftly to take a case to the courtroom when the need arises.


Geoff has been practicing law since 2001. He is licensed by the Supreme Court of Texas and the United States District Court for the Southern, Eastern, Northern, and Western Districts of Texas. Geoff graduated from the University of Texas at Austin and received his Doctor of Jurisprudence from South Texas College of Law where he was on the Dean’s List.

Probate Attorney Geoff Sansom helps Families Unite

Geoff Sansom of Matthews & Associates helps bring families together across the country who have been fractured by the death of a loved one. When a family in Ohio lost their patriarch, who had not died with his house in order, they called on Geoff to pull the loose ends together to help bring both emotional and financial closure. Geoff helped that family just as he has helped hundreds of others across the country. Here are two letters written by family members:

Geoff, This has been a long time coming. Without your patience and loyalty we would still be without closure. Everyone we contacted about helping us would turn us down because of the awful mess my father left. He never intended for us to have anything, as was his way to punish us for our very existence. He was a cruel man to his family, but to his friends he was generous to a fault. We thank you for taking care of business, and a guilty pleasure for your treatment of the “trash” he left behind in his house. My brothers and my sister and I wish you every good fortune for all your hard work. You made such a difference in all our lives. Forever Grateful, – Stephanie, Kelly, B.J. and Kim M. of Ohio


Hi Geoff, I just wanted to reach out to you and thank you from the bottom of my heart for being such a great friend and lawyer to my grandma. My husband and I were down in Houston over Thanksgiving going through what was left from my grandmother’s house and I found many letters from you to her. You helping her with the van, the will, and then all of the terrible things going on there toward the end. You truly saved me when I didn’t know what to do. I know I thanked you before but after seeing the letters again I wanted to be sure you knew how truly thankful I am to you. Sincerely, — Kristen N. of Texas

Houston Probate Lawyer Geoff Sansom...

  • enjoys a successful state-wide probate, guardianship, and fiduciary litigation practice.
  • manages a nationwide probate and guardianship docket for personal injury cases.
  • is certified by the State Bar of Texas as an ad litem under §647A of the Texas Probate Code.
  • is AV-Preeminent rated by Martindale-Hubbell.
  • regularly assists courts of Harris and Fort Bend Counties as attorney and guardian ad litem.
  • represents clients in civil commitment (mental health) proceedings.
  • serve as Special Commissioner in condemnation suits.
  • works when necessary in the courtroom as a trial attorney.
  • is licensed in Federal Courts for the Southern, Eastern, Western, and Northern Districts of Texas.
  • Geoff Sansom also successfully litigated more than 150 personal injury, commercial, and employment cases, from 2001-2005, as an associate with Fowler, Rodriguez, & Chalos, L.L.P.


    1998-2001 South Texas College of Law

    • Doctor of Jurisprudence, May 2001
    • Dean’s List
    • Mock Trial and Moot Court

    1994-1998 The University of Texas at Austin

    • B.A. – Government; Minor – Business Administration


    AV-Preeminent® Rated, HBA Probate Section, Fort Bend County Bar Association, DELAA, Arc of Texas, Texas Guardianship Association, Houston Trial Lawyers Association.

    Board Member: The University of Texas Scholarship Foundation; President-Elect of Houston, Texas-Exes

    Languages: Spanish