Simon Kenton was born at the headwaters of Mill Run in the Bull Run Mountains on April 3, 1755, in Prince William County, Virginia to Mark Kenton, Sr. (an immigrant from Ireland) and Mary Miller Kenton (whose family was Scots-Welsh in ancestry). In 1771, at the age of 16, thinking he had killed William Leachman in a jealous rage (the fight began over the love of a girl named Ellen Cummins), Kenton fled into the wilderness of West Virginia, Kentucky, and Ohio, where for years he went by the name "Simon Butler." After learning that his victim had lived, Kenton took back his original surname.