William Claiborne also, spelled Cleyburne was an English pioneer, surveyor, and an early settler in the colonies/provinces of Virginia and Maryland and around the Chesapeake Bay. Claiborne became a wealthy merchant and planter, as well as a major political figure in the mid-Atlantic colonies. He featured in disputes between the colonists of Virginia and the later settling of Maryland, partly because of his earlier trading post on Kent Island in the mid-way of the Chesapeake Bay, which provoked the first naval military battles in North American waters. Claiborne repeatedly attempted and failed to regain Kent Island from the Maryland Calverts, sometimes by force of arms, after its inclusion in the lands that were granted by a 1632 Royal Charter to the Calvert family. Kent Island had become Maryland territory after the surrounding lands were granted to Sir George Calvert, first Baron and Lord Baltimore (1579–1632) by the reigning King of England, Charles I.

Kent Island is the largest island in the Chesapeake Bay and a historic place in Maryland. To the east, a narrow channel known as the Kent Narrows barely separates the island from the Delmarva Peninsula, and on the other side, the island is separated from Sandy Point, an area near Annapolis, by roughly four miles (6.4 km) of water. At only four miles wide, the main waterway of the bay is at its narrowest at this point and is spanned here by the Chesapeake Bay Bridge. The Chester River runs to the north of the island and empties into the Chesapeake Bay at Kent Island's Love Point. To the south of the island lies Eastern Bay. The United States Census Bureau reports that the island has 31.62 square miles (81.90 km2) of land area.