ALT Happy Indigenous Peoples' Day. The University of Pennsylvania stands on the Indigenous territory known as “Lenapehoking,” the traditional homelands of the Lenape, also called Lenni-Lenape or Delaware Indians. William Penn's 1682 treaty with the Lenape. William Penn believed that Indians should be treated fairly. He traveled to the interior of the colony and befriended different Native American tribes. He insisted that the Native Americans be paid a fair price for any land that was purchased from them. If there was a dispute between the Native Americans and the settlers, he insisted that a committee of equal number of Native Americans and settlers resolve the dispute. Penn's influence on relations with the Native Americans lasted for many years.