Northern English and Scottish: habitational name from a place called Copeland, of which there is an example in Cumbria, or from Coupland in Northumberland, both named with Old Norse kaupa-land ‘bought land’, a feature worthy of note during the early Middle Ages, when land was rarely sold, but rather held by feudal tenure and handed down from one generation to the next
(Dictionary of American Family Names, Oxford University Press)
http://www.ancestry.com/search/SurnamePage.aspx?sourcecode=13304&html=b&fn=&ln=copeland&submit.x=0&submit.y=0