Question: Randolph "Randall" or "Ole Ran'l" McCoy, was the patriarch of the McCoy clan involved in the infamous American Hatfield–McCoy feud, 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 to what year?
{'answer': '1891', 'supporting_facts': [['Randolph McCoy', 0], ['Hatfield–McCoy feud', 0]]}