The Battle of the Grapevine Creek occuurred on 19 January 1888 when a posse of Kentuckians loyal to the McCoy family raided into West Virginia to hunt down the Hatfield family at the end of the Hatfield-McCoy feud.
Shortly after the killing of Jim Vance in January 1888, Vance's nephew and Hatfield patriarch Devil Anse Hatfield prepared for one last major offensive against the McCoys to avenge Vance and bring an end to the feud. When news of the Hatfields' preparations for war reached the McCoy side, Frank Phillips led the McCoy posse to intercept the Hatfields before they could invade Kentucky. Jim McCoy and another McCoy rode with Phillips' posse, and, on 19 January 1888, the McCoys intercepted the Hatfields at Grapevine Creek on the West Virginia side of the Tug Fork River. The Hatfields suffered multiple casualties and were forced to retreat after being outflanked, and nine Hatfields were captured. Ellison Hatfield's illegitimate son Ellison Mounts was executed for killing Randall McCoy's daughter Alifair McCoy on 1 January 1888; seven other prisoners were sentenced to life imprisonment.