MW
Mark Rush Williamson
Mark Rush Williamson is a lawyer in Dallas, TX who works for Williamson Family Law. Practice areas include Family. Court admissions include Texas Northern District Court, US Tax Court. Licensed in Texas since 1985. Graduated from University of Texas in 1985.
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Law school
Bar admission
Office
Disciplinary
MW
Mark Rush Williamson
Williamson Family LawDallas, TX·40 years licensed
Claim profileContact attorney
Mark Rush Williamson is a lawyer in Dallas, TX who works for Williamson Family Law. Practice areas include Family. Court admissions include Texas Northern District Court, US Tax Court. Licensed in Texas since 1985. Graduated from University of Texas in 1985.
Law school
University of Texas
Class of 1985
Bar admission
1985
State Bar of TX · No. 21624650
Office
12222 Merit Drive, Suite 1200
Dallas, TX 75251
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Sullivan Klocke & Williamson, P.C.AS OF MAY 2023Private Law Practice · Dallas, TX
- Williamson Family LawAPR 2026 — PRESENTPrivate Law Practice · Dallas, TX
Case data
Case data
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Practice & jurisdiction
Practice areas
- Family
Courts admitted
- Texas Northern District Court
- US Tax Court
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Last refreshed Jun 2026