In the early seventeenth century Pound Ridge was inhabited by Native Americans who spoke the Munsee language and were members of the Wappinger Confederacy. The geographical boundaries of the tribes within the Confederacy are unclear. Pound Ridge has been variously listed as within the territory of the Kitchawong, Siwanoy and Tankiteke tribes. These claims are not necessarily exclusive as tribal boundaries were not fixed and the land used by different tribes was often interlaced or shared. Interaction with Europeans caused Indians to change their settlement locations over time. Furthermore, the territories listed in sales to Europeans by particular tribal chiefs are not strict guides to the boundaries of tribal control or occupancy. The Siwanoy are generally agreed to have lived along the north Long Island Sound Coast with a maximum range extending from Hell Gate to Norwalk, Connecticut. The Tankiteke appear to have occupied eastern Westchester County and Fairfield County. The territory of the Kitchawong is thought to have extended from the Croton River to Anthony's Nose along the Hudson and some distance east from the river.