Will and Estate Planning

Wills you can use to avoid dependent administration and to name the beneficiaries of an estate rather…

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Guardianship Attorney

Guardianship’s of the person and guardianship’s of the estate become necessary when an individual is unable to make decisions regarding…

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Elder Law

Elder law is the general term used to refer to helping people understand the issues that they may face as they age. This is a very broad topic, which encompasses everything from…

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Estate Planning & Probate of Estates

Estates are either probated through an independent administration, which only requires that the court admit the Will to probate and…

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guardianship attorney fort worth


To provide efficient resolutions to legal situations while valuing the client’s sentiments and sensitivity.





» Undergraduate Degree – University of Texas, BBA Finance, 1973
» Law School St. Mary’s – San Antonio, TX, JD 1978


≫Holds Certification pursuant to Texas Estates Code Sec. 1054.201 required for representation and filing an Application For Guardianship in the State of Texas.


Thomas F Mastin, IV, was born and raised in Fort Worth, Texas. Admitted to State Bar of Texas to practice before all Courts of the State of Texas and U.S. District Court, Northern District of Texas. He received his Undergraduate Degree at the University of Texas, BBA (Finance) in 1973, and graduated from the Law School St. Mary’s, San Antonio, TX, in JD 1978. He has been in business since 1979.

Sole Practitioner – 1984 to Present. Practice is civil in nature with emphasis in probate (wills, probate of estates, heirship, elder law, guardianship and family settlements),  general business (general business issues, entity formation – corporation, LLC and partnership and collections) and real estate (land issues, contracts, closings.) 
Thomas Mastin operated a fee attorney office for Ticor Title Insurance Co from 1985 to 1991 when they ceased operations in Tarrant County, and he continued as an approved attorney for Lawyers American Title and Commonwealth Title until 2008 when emphasis shifted to representing clients only. Before Law School, Thomas Mastin worked in the automobile parts business in inventory control and purchasing and obtained his Real Estate Broker license.
+Member Organizations
  • Tarrant County Bar Association (Member of following Tarrant County Bar Assoc. Sections: Mentor, Real Estate, Elder Law Handbook and Senior Citizens Liaison Committee and Solo Practitioners)
  • Tarrant County Probate Bar Assn. (Director (2003 to 2005)
  • Tarrant County Probate Bar Litigation Seminar – Co-Chair 2004
  • Fort Worth-Tarrant County Young Lawyers – President 1984

+Service Affiliations
  • Guardianship Services, Inc. – Director 2008 to 2013
  • Mediator – 1992 to Present (Training Dispute Resolution Services Tarrant County) Mediation experience primarily in Real Estate, Commercial Transactions, Probate and Personal Injury.
  • Fort Worth Classical Guitar Society
  • Republican Precinct Chairman – Precinct 4086, 1989-1993
  • All Saints Episcopal School – School Board, 1990-1993
  • Tarrant County Bird Hunters Association Officer – Director, 1985-1991 & President, 1991-1992
  • Senior Citizens Services – Director, 1981-1984
  • YMCA-Camp Amon Carter – President, 1984 & Sustaining Fund Chairman, 1983
  • Crestline Neighborhood Association – Chairman, 1983
  • Fort Worth Fly Fishers

Material presented on this website is intended for information purpose only. It is not intended as professional advice and should not be construed as such. The services of a competent professional should be sought if legal or other specific expert assistance is required.