Teedyuscung, along with other Native American leaders, signed the Easton Treaty, promising not to fight with the French against the British in exchange for large blocks of land which had been surrendered a few years prior by the Iroquois. Peace was declared in Easton, and Teedyuscung would go on to advocate for the rights of the Delawares as long as he was alive. However, competing interests with the much more powerful Iroquois Confederacy refuted his claims on land in Wyoming Valley.
On April 19, 1763, without support and unprotected, Teedyuscung died when his home and the whole village of Wyolutimunk was burned to the ground by arsonists who some believe to be colonists. Settlers arrived shortly after, and the last of the Lenape in Pennsylvania were scattered.
Source material: Anthony F. C Wallace, King of the Delawares: Teedyuscung,
1700-1763 (Syracuse: Syracuse University Press), Reprint, 1990.