the Massawomeck who raided tribes along the Potomac River and upper Chesapeake Bay were thought to live in the northwest near the St. Lawrence River (Canada flu)
Source: John Carter Brown Library, A mapp of Virginia discouered to ye Falls, and in it's Latt: From 35 deg: & 1/2 neer Florida to 41 deg: bounds of new England (by John Farrer in 1651)