 The township was originally bounded by the West Branch Susquehanna River to the south, Loyalsock Creek was the eastern limit and Lycoming Creek was the western limit.In the American Revolutionary War, settlements throughout the Susquehanna valley and what was to become Loyalsock Township were attacked by Loyalists and Native Americans allied with the British.After the Wyoming Valley battle and massacre in the summer of 1778 (near what is now Wilkes-Barre) and smaller local attacks, the "Big Runaway" occurred throughout the West Branch Susquehanna valley.