Cornelius Chacon's head is an item that is obtained during the Selection Process quest. It is located by killing Cornelius Chacon, who lives on a farm north-west of Pequeno Canyon.
|“||This should suffice to prove he's dead.||”|
— In-game description
|“||As a test of your loyalty and ability, the boss has instructed you to find Cornelius Chacon, and execute him. Whoever brings me his head will be selected.||”|
— Mike Doolin, to Em and Elfego Arcine