During the treaty in Philadelphia of 1736, Shikellamy, Weiser, and the Pennsylvanians negotiated a deed whereby the Iroquois sold the land drained by the Delaware River and south of the Blue Mountain. Since the Iroquois had not until then laid claim to this land, Pennsylvania's agreement to purchase from them represented a significant change in the colony's policy toward the Native Americans. William Penn, who had died in 1718, had never taken sides in disputes between tribes. By this formal purchase, the Pennsylvanians were favoring the Iroquois over the claims of the Lenape (whom the English called the Delaware after the river they named after a lord) for the same land. Along with the Walking Purchase of the following year, this treaty (entered into by Penn's sons) exacerbated Pennsylvania-Lenape relations. The Lenape became disenchanted with the English colonials as a result; during the French and Indian Wars, they sided with the French and took part in armed actions against the colonists, causing many deaths. Penn's purchase persuaded the Six Nations of the Iroquois to continue to side with the British over the French in that war. Also, by that time the Iroquois nations had more trading relationships with the English in New York and Pennsylvania than they did the French, who were based further north.