original_query: Who was Opessa Straight Tail and what was his role in the Shawnee tribe?
query: Who was Opessa Straight Tail and what was his role in the Shawnee tribe?
answer: Opessa Straight Tail was a Pekowi Shawnee Chief, son of Straight Tail Meaurroway Opessa.  He played a significant role in Shawnee affairs, including treaty negotiations with William Penn, leading the tribe through various conflicts and migrations, and ultimately becoming a key figure in relations between the Shawnees and other Native American groups and European settlers.