also known as Bully Wilson, may actually have been an alias for Samuel Mason, the next leader of the gang after Mason's hasty departure, or possibly the front man for Mason's operation. He may be the Wilson who married one of Mason's nieces. In 1799, he hung a sign over the cave's entrance saying "Wilson's Liquor Vault and House for Entertainment". By this time, Duff and his associates had been making salt (or looking for silver) in the area around the Illinois Salines along the Saline River in southeastern Illinois. A detachment from the U.S. Army garrison at Fort Massac, down river from Cave-In-Rock, captured him and three of his men, Blakely, Hazle and Hall. The soldiers took their prisoners by boat down the Saline River to the Ohio River, intending to return to the fort. Old histories do not explain why they stopped at the cave. Subsequent events suggest it took place during the spring of 1799, when Wilson was in business, making it a stop for entertainment. Duff and his men escaped and overpowered the soldiers. They tied them up, put them in a boat, and pushed it into the river to float downstream to the fort. On June 4, 1799, the commandant of Fort Massac, Captain Zebulon Pike Sr., father of the future explorer of Pikes Peak, hired a French Canadian coureur de bois and three Shawnee warriors to assassinate Duff, which they did. The infamous Harpe brothers also reached the cave region in the spring of 1799. They are associated with two separate stories at the cave and one at the infamous Potts Spring area to the north. The first story has them pushing a young couple off the top of the cliff above the cave. They survived. The second was an act of piracy in which only one man survived. Later, he was forced off the cliff as well, this time involving the man being tied down to a horse. Neither survived. The Potts Spring story is recalled as a murder of two or three hunters. This Harpe murder site within twenty years would become the future location of the legendary Potts Inn, which was presumed to be a human death trap for unsuspecting travelers along the Ford's Ferry High Water Road, an early frontier highway, who wanted to spend the night for food and lodging. Mason and Wilson's time at the cave may have