Welcome to Franklin County Pennsylvania History and Genealogy Presented by Pennsylvania Trails History and Genealogy Part of THIS COUNTY IS AVAILABLE FOR ADOPTION!! If you have the desire to help transcribe genealogical data and place it online for the free use of all researchers, contact Kim to become a host. Volunteer Information is available here. This County currently does not have a host. This means that there is no one available to help answer your questions about this county's history or to help you with your family's genealogy within this county. WE REGRET THAT WE ARE UNABLE TO DO PERSONAL RESEARCH FOR YOU. Franklin county is located in the South Central part of Pennsylvania and is named in honor of Benjamin Franklin. Its county seat is Chambersburg. A large part of Franklin County lies within the Cumberland Valley