Jenkins

Jenkins was a Royal Navy member who infiltrated the pirate captain Edward Thatch's crew. He served until 1718, when he met with his British commanders at Ocracoke. There, they set an ambush for any pirates who arrived, including Thatch, who had called the gathering to celebrate his retirement.[1]
In a conversation with his commander Robert Maynard, Jenkins elaborated on Thatch's apparent insanity, explaining that the pirate drank ale laced with gunpowder, and occasionally locked his crew in the hold of the Queen Anne's Revenge and lit sulfur and other chemicals to test their resolve.[1]
During his rendezvous, Jenkins' sly movements attracted the attention of Edward Kenway, who pursued him through the outlying jungle and witnessed him signaling the Royal Navy to launch a mortar attack on the encampment. In the ensuing battle, all of the pirates present were killed except for Kenway and his crew.[1]