The Petun people were an indigenous group that lived in the area in the 1600s. They thrived. In fact that had 9 settlements in the area, totalling around 10,000 people. Not only this, they mastered agri- and horticulture, and were major players in the fur trade. Unfortunately, an outbreak of European smallpox in the early 1600s and an attack from their southern neighbours (the Seneca), wiped them out entirely before 1650 came around. Anyways, they were the original inhabitants of the land - land which experienced no human tampering right up until the NVCA took control and made it into the conservation area we know today.
"Petun" is the name of the native group, and it's French for tobacco, as they were known for their incredible tobacco plantations.