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William C. Trevillian Sr.

William C. Trevillian

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William C. Trevillian Sr., has been practicing law in Maryland for more than 25 years. He is a graduate of the University of Baltimore School of Law where he was valedictorian of his law class. He has represented thousands of clients in many different areas of law including criminal, DUI/DWI, Traffic Violations, Divorce matters, Custody disputes, business law, personal injury, estate planning, state administration, and real estate law. Through his vast knowledge of the law he has built a law practice where clients feel comfortable discussing their legal matters because they know that all of their rights are being protected. William C. Trevillian Sr., has served as a member of the Anne Arundel County Board of License Commissioners and is a current Member of the Maryland State Bar Association and the Anne Arundel County Bar Association. He is admitted to practice law in Maryland and the United States District Court.


  • University of Baltimore School of Law, Baltimore, Maryland
    • J.D.
    • Honors: Valedictorian
  • University of Baltimore, Baltimore, Maryland
    • B.S.

Professional Associations

  • Anne Arundel County Board of License Commissioners, Member
  • Maryland State Bar association, Member
  • Anne Arundel County Bar Association, Member

Practice Areas

  • Adoption
  • Child Support
  • Criminal Law
  • Child Custody & Visitation
  • Divorce, Separation and Alimony
  • Business/Corporate Law
  • Elder Law
  • Family Law
  • Medical Malpractice
  • Motor Vehicle Accidents
  • Personal Injury
  • Prenuptial and Postnuptial Agreements
  • Worker’s Compensation

Bar Admissions

  • Maryland
  • U.S. District Court District of Maryland

Current Employment Position

  • Attorney