The Scottish surname Maxwell, also found in Northern Ireland, is an habitational name from a place near Melrose in Roxburghshire. The place originated when Maccus, son of Undewyn, a Saxon lord, obtained a grant of land on the Tweed River before 1150 and from the salmon pool attached to it called "Maccus's Wiel" the lands obtained their name. The placename was recorded in 1144 as Mackeswell and the surname dates back to the late 12th Century. The name is first recorded in the New World in 1650 when Alexander Maxwell arrived in Boston. Today there are approximately 66,000 bearers of the name Maxwell living in the United States.