Martson North

Martson North Office
621 West Main Street, P.O. Box 300, Thompsontown, Pennsylvania 17094
Telephone: 717-535-2100


8:00am -5:00pm Tuesdays & Thursdays


*Appointments can also be scheduled on other days of the week
*Evenings and weekend appointments available





Appointments can be Scheduled by:
1.) Call 717-535-2100 for the Thompsontown Office

2.) Call 717-243-3341 for the Carlisle Office


About Martson North:
Our branch office is located at 621 West Main Street, Thompsontown, Pennsylvania.
Martson North opened on January 3rd, 2017, and is a full-service law firm located in the heart of Thompsontown.


Providing Comprehensive Legal Services to
Individuals and Corporate Clients

  • Business and transactional matters
  • Family law
  • Criminal defense
  • Estate & financial planning
  • Asset transition & preservation
  • Real Estate – protection, settlements, title work, transfers, easements
  • Land use
  • Litigation
  • Personal injury
  • Workers’ compensation
  • Alternative dispute resolution


Martson Law Offices - Seth Mosebey

Seth Mosebey, Esquire, a shareholder with Martson Law Offices, manages the Martson North branch.


Seth grew up in the Oakland Mills area. He is a 1999 graduate of East Juniata High School and graduated summa cum laude and with University Honors from Susquehanna University in 2003. In 2006, Seth graduated from The Pennsylvania State University Dickinson School of Law.


He serves as a member of the Board of Directors for the Mifflintown Rotary Club, Juniata County Historical Society, and Juniata County Conservation District. In 2016, he was also appointed to serve as a Hearing Committee Member serving the Disciplinary Board of the Supreme Court of Pennsylvania.


Seth resides in Delaware Township with his wife and two small children.



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Main Office
Ten East High Street
Carlisle, Pennsylvania 17013
Map this address
(717) 243-3341
(717) 243-1850 Fax

Mon. - Fri.
8:00 a.m. to 5:00 p.m.
Martson North – Branch Office
621 West Main Street,
P.O. Box 300
Thompsontown, Pennsylvania 17094
(717) 535-2100

Tuesdays & Thursdays
8:00 a.m. to 5:00 p.m.
*Appointments can also be scheduled on other days of the week.
*Evenings and weekend appointments available