A Scottish surname that originated in Ireland, the Muir name comes from the Middle English term ‘moor’ referring to one who lives near a moor or a secure place. Variations in spelling Muir include Mure, Moore, More, Moor, Myre, Mur and Moire. In England the Muir families are in the northern region in Lancashire, Yorkshire, Durham, Cumberland, Cheshire and Northumberland counties. Across Scotland the Muir name is popular. The greater Scottish populations live in Lanarkshire, Midlothian, Renfrewshire and Ayrshire counties. Within the United States the Muir family names is scattered across the country. Most are concentrated in Michigan, New York, Pennsylvania, Illinois, Ohio, Maryland, Oregon, New Jersey and California. Famous: Bryan Muir (professional ice hockey player from Canada), Mike Muir (a singer), Jean Muir (an English fashion designer), William Muir (a poet from Scotland), John Muir (a cultural historian from South Africa), John Muir (a 19th century explorer of the American western frontier and writer), David Muir (a television news correspondent) and Jean Muir (a theater and movie film actress).