 Complete the following phrase:  On October 1, 1764 a patent was approved for 10,160 14 acres in extreme southern Washington County, then Frederick County Maryland for a prominent businessman named John Semple of Charles County. Such large properties were categorized as manors in colonial Maryland, with their own unique laws. The tract was named Keep Treist by Semple, but took on the popular name of Semples Manor, which became Samples Manor. John Semple was an innovator in colonial America with unique vision and goals. He was not attentive to his ficial affairs, however, and within a decade of acquiring Keep Treist, John Semple was bankrupt. Most of Keep Treist would be acquired by the Frederick Forge, later to become the Antietam Iron Works. By the mid-19th century much of the forest had been harvested and converted to charcoal to fuel the iron works. The cleared land was then sold for farms and lots. These land sales increased after the unexpected death of Iron Works owner John Brein in 1849. The most famous resident of Samples Manor would only live there for four months in 1859 at the nearby Kennedy Farm. The abolitionist John Brown and his cadre of followers would make history on October 16, 1859 with their raid on the U.S. Armory, three miles away at 