Henry Worly or Worley made barrels (Gardner says active 1850-1890), but was later than the looks of this old barrel. Other Worlys were Caleb, David, Henry H (Son of Henry), I, John, John G, Jesse, l, Theophilus, Thomas, Francis, Jacob, Richard. Some were gunmakers, as well, I think. My “I Worly" stamped barrel is on a Morrison percussion rifle (Milton, PA--Upper Susquehanna). Does any of this fit?
Bill Paton