The Castaic Range War, also known as the Jenkins-Chormicle Affair, was a range war that happened in Castaic, California from 1890 to 1916, between ranchers and farmers William Willoby Jenkins and William C. Chormicle who both staked claims on a piece of land in the territory. The feud started when Chormicle purchased 1,600 acres of the same land Jenkins had settled on years ago. When the dispute couldn't be settled in court, violence erupted between the two, lasting for over two decades, with dozens of men from both sides killed. It was one of the largest range wars in American history and one of the bloodiest events in the state.