Inuit traded with mainland groups as far east as King William Island and as far south as Great Bear Lake although most commerce occurred with the Inuvialuit and Copper Inuit populations indigenous to the Coppermine River watershed and Bernard Harbour seasonal areas on the mainland. The majority of Ulukhaktokmiut come from a varied background, with family ties extending mainly to the Coppermine River community of Kugluktuk, Nunavut and the communities of the Mackenzie River Delta and Beaufort Sea, though some families have relatives as far away as Gjoa Haven on King William Island, and along the north slope of Alaska as far as Port Clarence on the Seward Peninsula.