Distribution of people with the surname Cannon in Scotland in 1841.
Distribution of the Cannon name in the United States in 1840/
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Tracing Immigrant Origins United States Emigration and Immigration Surname Distribution Maps
Sometimes it is possible to guess where a surname originated through surname distribution maps. These maps graphically display locations where surnames occurred at different periods in time. This strategy provides genealogists with a starting point for research in the birth country, when that information cannot be discovered through sources recorded in the new country of settlement. It works particularly well for less-common surnames and among families that have stayed in the same European locations for centuries.