Fort Pitt Museum Pitt, after William Pitt the Elder. As a result, in 1763 local Delawares and Shawnees took part in Pontiac's Rebellion, an effort to drive the British out of their territory. The Indians' siege of Fort Pitt began on June 22, 1763, but the fort was too strong to be taken by force. In negotiations during the siege, the commander of Fort Pitt gave two Delaware emissaries blankets that had been exposed to smallpox, in hopes of infecting the surrounding Indians and ending the siege. The effectiveness of this attempt is unclear. Outbreaks of smallpox had plagued Native Americans for years
Siege of Fort Wayne safety of Ohio. In September 1812, Indians from the Potawatomi and Miami tribes, led by Chief Winamac, gathered around Fort Wayne. Captain James Rhea sent letters to John Johnston and Ohio Governor Return Meigs to ask for assistance. The growing Indian threat outside the fort led Rhea to begin drinking heavily. On several occasions Rhea invited Indian delegates into the fort to discuss terms of peace with the Indians. On 4 September, Potawatomi chiefs Winamac and Wannangsea approached the fort under a flag of truce and asked to speak to Captain Rhea. Rhea, who had been drinking, met them at