Question: When does the leader of  McCoys of Kentucky died under who's leadrship The Hatfield–McCoy feud occured?
Sentence (from "Hatfield–McCoy feud"): The Hatfield–McCoy feud, or the McCoy-Hatfield feud or the Hatfield–McCoy war as some papers at the time called it, involved two rural families of the West Virginia–Kentucky area along the Tug Fork of the Big Sandy River in the years 1863–1891.
Relevant evidence: Yes