DB
Donald Thomas Brennan
Donald Thomas Brennan is a lawyer in San Antonio, TX who works for Hayden & Cunningham, PLLC. Practice areas include Creditor-Debtor, Real Estate. Licensed in Texas since 1993. Graduated from St. Mary's University in 1993.
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Law school
Bar admission
Office
Disciplinary
DB
Donald Thomas Brennan
Hayden & Cunningham, PLLCSan Antonio, TX·32 years licensed
Claim profileContact attorney
Donald Thomas Brennan is a lawyer in San Antonio, TX who works for Hayden & Cunningham, PLLC. Practice areas include Creditor-Debtor, Real Estate. Licensed in Texas since 1993. Graduated from St. Mary's University in 1993.
Law school
St. Mary's University
Class of 1993
Bar admission
1993
State Bar of TX · No. 787134
Office
7750 Broadway
San Antonio, TX 78209
Disciplinary
None on record
Clean since admission
Case data
Case data
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Practice & jurisdiction
Practice areas
- Creditor-Debtor
- Real Estate
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Last refreshed Jun 2026