 Decimated by disease and warfare with the Five Nations of the Iroquois, by 1675 they had died out, moved away, or been assimilated into other tribes.Another name for the tribe is "Susquehanna", and both the river and the Susquehannock State Forest which almost completely surrounds the park are named for them.After the departure of the Susquehannocks, the lands of the West Branch Susquehanna River valley were under the nominal control of the Iroquois, who lived in long houses, primarily in what is now upstate New York, and had a strong confederacy which gave them power beyond their numbers.