How were the borders of Maryland determined?

The borders of Maryland were determined by a series of agreements and treaties between the English Crown, Native Americans, and neighboring colonies. The first English settlement in the region, known as the Province of Maryland, was founded in 1632 by Cecil Calvert, 2nd Baron Baltimore. Calvert received a charter from King Charles I that granted him ownership of the land between the Potomac and Susquehanna rivers. The southern boundary of Maryland was established by the Treaty of Westminister in 1658, which set the boundary between Maryland and Virginia at the Potomac River. The northern boundary of Maryland was established by the Treaty of Albany in 1685, which set the boundary between Maryland and Pennsylvania at the Mason-Dixon line. The western boundary of Maryland was established by the Treaty of Fort Stanwix in 1768, which set the boundary between Maryland and the Iroquois Confederacy at the Appalachian Mountains.