Here is another article on the Fort Pitt event. Once again, there doesn't appear to be an actual link between Captain Eculer and the infected blankets.
[May] 24th [1763] The Turtles Heart a principal Warrior of the Delawares and Mamaltee a Chief came within a small distance of the Fort Mr. McKee went out to them and they made a Speech letting us know that all our [POSTS] as Ligonier was destroyed, that great numbers of Indians [were coming and] that out of regard to us, they had prevailed on 6 Nations [not to] attack us but give us time to go down the Country and they desired we would set of immediately. The Commanding Officer thanked them, let them know that we had everything we wanted, that we could defend it against all the Indians in the Woods, that we had three large Armys marching to Chastise those Indians that had struck us, told them to take care of their Women and Children, but not to tell any other Natives, they said they would go and speak to their Chiefs and come and tell us what they said, they returned and said they would hold fast of the Chain of friendship.
Out of our regard to them we gave them two Blankets and an Handkerchief out of the Small Pox Hospital. I hope it will have the desired effect. They then told us that Ligonier had been attacked, but that the Enemy were beat of
***the website
http://www.thefurtrapper.com/indian_smallpox.htm an interesting thought regarding the trent journal entry, I also noted that the indians that were given the blankets seemed to be friendly to the people in the fort which makes one wonder why they gave them infected blankets, this website also asks wether or not the Captain himself or even the others, knew the blankets were infected.
Indian forces under the command of Chief Pontiac laid siege to Fort Pitt (June 22, thru July, 1763). Several weeks before the siege (May 24th, 1763), William Trent, commander of the local militia, wrote:
"Out of our regard for them (two Indian chiefs) we gave them two blankets and a handkerchief out of the smallpox hospital. I hope it will have the desired effect.
The above paraphrased quote from William Trent's Journal has been taken as the major evidence for using smallpox blankets...but...the full quote by Trent is subject to a different interpretation.
"[May] 24th [1763] The Turtles Heart a principal Warrior of the Delawares and Mamaltee a Chief came within a small distance of the Fort Mr. McKee went out to them and they made a Speech letting us know that all our [POSTS] as [at] Ligonier was destroyed, that great numbers of Indians [were coming and] that out of regard to us, they had prevailed on 6 Nations [not to] attack us but give us time to go down the Country and they desired we would set of immediately. The Commanding Officer thanked them, let them know that we had everything we wanted, that we could defend it against all the Indians in the Woods, that we had three large Armys marching to Chastise those Indians that had struck us, told them to take care of their Women and Children, but not to tell any other Natives, they said they would go and speak to their Chiefs and come and tell us what they said, they returned and said they would hold fast of the Chain of friendship. Out of our regard to them we gave them two Blankets and an Handkerchief out of the Small Pox Hospital. I hope it will have the desired effect. They then told us that Ligonier had been attacked, but that the Enemy were beat of."
The full quote indicates the giving of the blankets was a gesture of gratitude towards friendly Indians. At this time, there is no evidence Captain Ecuyer, Commander of Fort Pitt, knew the blankets were infected with smallpox. Several weeks later, June 13, 1763, Captain Ecuyer wrote to Colonel Bouquet:
Fort Pitt is in good state of defense against all attempts from Savages, who are daily firing upon the Fort; unluckily the Small Pox has broken out in the garrison, for which he has built an Hospital under the Draw Bridge to prevent the Spreading of that distemper.
The above quote from William Trent's Journal was written two months before the exchange of letters( July 13-26, 1763) between Amherst and Col. Bouquet. In a footnote of a letter (July 16, 1763) to Colonel Bouquet, Lord Amherst wrote:
"Could it not be contrived to send the Small Pox among those disaffected tribes of Indians? We must on this occasion use every stratagem in our power to reduce them".