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Where is the Leonhardt family from?
You can see how Leonhardt families moved over time by selecting different census years. The Leonhardt family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Leonhardt families were found in USA in 1920. In 1891 there were 13 Leonhardt families living in London. This was about 81% of all the recorded Leonhardt's in United Kingdom. London had the highest population of Leonhardt families in 1891.
Use census records and voter lists to see where families with the Leonhardt surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.