 In 1742, he paid five shillings for a piece of land upon which the town of Edmonston eventually developed.The Edmonston Family had been active in local Revolutionary War effort and were descendants of the Family Edmonstone of Duntreath Castle, Scotland.The first modern settlers of the community were Adam Francis Plummer and his wife Emily Saunders Arnold Plummer, who had been slaves of the powerful Calvert family on the Riversdale Plantation in present-day Riverdale Park.