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Brandon S. O’Donnell, Esquire

Brandon is a founding member of Sommer & O’Donnell, LLC in Carlisle, Pennsylvania, where he represents clients in all aspects of family law; such as divorce, separation, custody, support, grandparent’s rights, pre-marital agreements, adoption, involuntary termination of parental rights, protection from abuse issues, paternity issues, name change, dependency and legal guardianship.  Additionally, Brandon’s Estate planning and Estate Administration practice includes representing client’s in the areas of wills, living wills, powers of attorney, guardianship and estate litigation.


Brandon’s family law practice takes him from as far west to Fulton county and as far east to Lehigh county; however, he is licensed to appear in any county in the Commonwealth. Brandon frequently practices in Cumberland, Franklin, York, Adams, and Dauphin County.


Brandon is a graduate of the Pennsylvania State University. He earned his Juris Doctor at the Widener University School of Law in Harrisburg, Pennsylvania. While in law school, Brandon received the Pro Bono Distinction, which is earned by those law students who have completed at least 60 hours of pro bono service in the community. Additionally, he received the Certificate of Achievement for Legal Methods III, Writing for General Practice, a distinction given to the student with the highest grade in that class.


Prior to opening his own boutique family law firm with Michelle Sommer, Esquire, Brandon was an Associate Attorney practicing family law at a local law firm in Cumberland County.  Brandon interned at the York County District Attorney’s Office, where he worked in the Appellate Unit conducting legal research and writing Appellate Briefs.


Brandon is a native of South Central Pennsylvania spending his childhood in Hanover, Pennsylvania and previously living in Lancaster, Pennsylvania, where his family owns the E.J. Bowman House Bed and Breakfast, and currently residing in York, Pennsylvania. In addition to his legal career, Brandon currently serves as Treasurer on the Hanover Little Theatre’s Board of Directors, Hanover’s only all-volunteer community theater.

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  • J.D. – Widener University School of Law
  • B.A. – Penn State University



  • All Pennsylvania State Courts
  • U.S. District Court for the Middle District of Pennsylvania


Membership Affiliations:

  • Pennsylvania Bar Association
    • Family Law Section of the Pennsylvania Bar Association
  • Cumberland County Bar Association,
    • Young Lawyers Division, Treasurer
    • Family Law Section, Chair of Support
  • York County Bar Association
    • Family Law Section Member
  • Dauphin County Bar Association
    • Family Law Section Member
  • Hanover Little Theatre Executive Board Member
    • Treasurer
Sommer & O'Donnell - Attorneys at Law

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