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Where is the Gahagan family from?
You can see how Gahagan families moved over time by selecting different census years. The Gahagan family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Gahagan families were found in USA in 1880. In 1911 there were 15 Gahagan families living in Ontario. This was about 63% of all the recorded Gahagan's in Canada. Ontario had the highest population of Gahagan families in 1911.
Use census records and voter lists to see where families with the Gahagan surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.