Washington letter http://founders.archives.gov/documents/Washington/03-18-02-0523 From Meek Various efforts were made by Captain James Willing, of Phil adelphia, and Oliver Pollock, the agents of the Conti nental Congress, to seduce them from their allegiance. These gentlemen came by way of New Orleans to Mobile, and circulated clandestinely, many copies of the Declaration of Independence. But the effort was a bortive. After many narrow escapes, Captain Willing was at length apprehended through the vigilance of the British officers, and was kept closely confined, a part of the time in irons, in the stone Keep of Fort Charlotte. He came near expiating his temerity upon a gallows in the plaza in front of that fortress, but was eventually exchanged at* the close of the year 1779, for Colonel Hamilton of Detroit, a British officer, upon whom our government had retaliated for the rigorous treatment of the imprisoned agent.

From Siebert

Great link on Pollack http://ecommons.luc.edu/cgi/viewcontent.cgi?article=1614&context=luc_theses

Those remaining behind who 
had acted with Jackson were sent under guard to Pensacola, 
where several were ordered shot.* Willing and the rest of his 
party, meantime, had sailed from Manchac to the Tensas settle- 
ments above Mobile, and had tried to enlist the people there in 
their cause. In 1779 Captain Willing sent his troops north 
under the command of Lieutenant Robert George, who placed 
them under the orders of General George Rogers Clark. But 
Willing himself proceeded to Mobile, was captured there and 
placed in confinement in the stone keep of Fort Charlotte. He 
narrowly escaped being hanged in the plaza in front of that 
fortress ; but was shipped to New York at the close of the year." 
If Willing 's adventures accomplished nothing for the Ameri- 
cans, they at any rate moved the new commander in chief of the 
British forces. Sir Henry Clinton, to send one thousand troops 
under Brigadier General John Campbell to Pensacola, at the 
same time that he dispatched three thousand under Lieutenant 
Colonel Archibald Campbell to take possession of Savannah. 
Clinton's instructions to the former officer made it clear that he 
was to assume command of the king's soldiers in West Florida, 

s Claiborne, Mississippi, as a province, territory and state, 1 : 121-123 ; Historical 
Manuscripts Commission, Report on American manuscripts in the Boyal Institution, 
1: 260; Pickett, Bistory of Alabama, 348, 349.