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Cognomen Montagu (Mont
, Montagu
, מונטגיו
) , across the world, is quite a common surname. The family name Montagu is habitual in Guatemala, where it is quite a rare surname, Montenegro, and Puerto Rico. Not in comparison with a country's population, the name is most common in France, Guatemala, and the United States. Much less frequently, Montagu is the forename as well as the last name.