I've done some pretty hefty study of Berks County guns and I believe this rifle is by Jesse Worley of Mohnton, Cumru Township, in south Berks County. I've seen 2 (now 3) very similar rifles with the same identical signature... and to boot, one of them is owned by an elderly lady in Mohnton, Pennsylvania who positively says it was her father's gun. The town was a major center of gun barrel makers--such names as the Pannabeckers, Christ, Deeds, Gring, Haberling, Hornberger, Reichwein, Schnader and more...all worked from about 1750 until 1900. At one time some 20 gun barrel factories were on the Wyomissing Creek. The Worley family was a large family of gun barrel makers along the Wyomissing and a few made complete guns...the most often seen are by Jesse Worley the elder, which I believe made this gun. He later bought and operated the first tilden hammer gun barrel factory, where most of his sons worked. Parts of the building still stand in Mohnton - where in fact an exploratory dig will be performed next year.
I found no record that any Worley moved to Schuykill County and Jesse and most of his sons are buried in Mohnton.
Patrick Hornberger, author
BERKS COUNTY LONG RIFLES & GUNMAKERS