Conversation so far:
What was Osceola's role in the resistance?
Osceola's nearly simultaneous attacks catalyzed the Second Seminole War with the United States.
What is the Treaty of Payne's Landing?
The Treaty of Payne's Landing was an agreement signed on 9 May 1832 between the government of the United States and several chiefs of the Seminole Indians.
Why did the US government want to remove the Seminole?
Through the 1820s and the turn of the decade, American settlers continued pressuring the US government to remove the Seminole from Florida to make way for their desired agricultural development.
What else did Osceola do?
On December 28, 1835, Osceola, with the same rifle Thompson gave him, killed the Indian agent.

Question: Who is Thompson?
Self-contained rewrite: Who is Wiley Thompson?