 This had included present-day Baltimore City and county, Harford, Carroll, eastern Frederick, and portions of Howard and Anne Arundel counties.At the time of its founding, Cecil County also included modern Kent County and the border on the Eastern Shore of the Chesapeake Bay went as far south as the Chester River, until its later formation in 1706.The Piscataway traded with the Susquehannocks near Conowingo, and with Lenape of the Delaware valley and their Nanticoke allies near the Elk River and Elk Neck Peninsula.