The notoriety and power of the Cowboys spread from coast to coast. Well-known members of the group included Ike, Billy, and Phineas Clanton, Frank and Tom McLaury, Curly Bill Brocius, Billy Claiborne, Johnny Ringo, Frank Stilwell, Pony Diehl, Pete Spence, and Harry Head. Virgil Earp thought that some of the Cowboys had met at Charleston, Arizona, and taken "an oath over blood drawn from the arm of Ringo, the leader, that they would kill us." Three Cowboys were killed by lawmen in the Gunfight at the O.K. Corral on October 26, 1881. Others were later accused of trying to kill Virgil Earp and of assassinating Morgan Earp. Wyatt Earp's posse killed four more Cowboys when they ran down those identified as taking part in the attacks on his brothers.