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 Mountains. Since the Iroquois had never until then laid claim to this land, this purchase represented a significant swing in Pennsylvanian policy toward the Native Americans. William Penn had never taken sides in disputes between tribes, but by this purchase, the Pennsylvanians were favoring the Iroquois over the Lenape. Along with the Walking Purchase of the following year, his treaty exacerbated Pennsylvania-Lenape relations. The results of this policy shift would help induce the Lenape to side with the French during the French and Indian Wars, which would result in many colonial deaths. It did, however, help induce the Iroquois to continue to side with the British over the French.