Daphne Trombley
Senior Counsel
Email: intake@wmsfirmlaw.com
Personal Experience
Daphne Trombley joined The Williams Firm, P.C. in December 2025 as Senior Counsel, bringing more than 19 years of comprehensive legal experience across diverse practice areas, including probate, contracts, trademarks, personal injury, business formation, criminal law, family law, and litigation.
Attorney Trombley has served for over 16 years as a military officer in the U.S. Army Reserve Judge Advocate General’s Corps., where she most recently held the position of Program Director for the Special Victims’ Counsel Program. Her distinguished career also includes service as Managing Assistant Attorney General with the Texas Office of the Attorney General after selection as an original member of the landmark H.E.R.O.E.S. Program.
A certified mediator and certified guardian ad litem, Attorney Trombley is recognized for her disciplined approach, strategic leadership, and dedication to achieving successful outcomes for her clients.

Attorney Trombley graduated among the top ten of her class from Coldspring-Oakhurst High School in San Jacinto County, Texas. She earned her Bachelor of Arts in Interpersonal Communication, with honors, from the University of Houston in 2001, and her Juris Doctor from South Texas College of Law Houston in 2006.
She was selected to the State Bar of Texas’ LeadershipSBOT Class of 2021-2022 and served on its Pattern Jury Charge Oversight Committee in 2023-2024.
Today, Attorney Trombley leads the firm’s work as City Attorney for the City of Livingston. In that role, she advises the City Council and City Manager on ordinances, resolutions, contracts, public information requests, and the application of Texas municipal law to City operations; attends City Council meetings; and oversees the City’s prosecutions in Municipal Court. Within the firm, she handles its most complex and high-stakes matters and supports Managing Attorney Dana T. Williams by overseeing the firm’s legal operations and the work of its associate attorneys.
A typical weekend in the Trombley family is spent attending church, camping, and volunteering with Scouting America.
Areas Of Practice
Additional areas of practice include Family Law, Business Formation, Personal Injury, and Mediation.
Admitted To Practice
- Texas, 2007
- Federal Court - Eastern District of Texas
Education
- South Texas College of Law
- Doctor of Jurisprudence/Juris Doctor (J.D.), 2006
Certifications
- Mediation - 2022
- Family Law Mediation - 2022
- Guardian Ad Litem - 2025
Memberships
- Montgomery County Bar Association
- Judge Advocates’ Association
- Texas Bar College
- Institute for Supply Chain Management
- Texas City Attorneys Association
- American Society of Access Professionals