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Where is the De Montmorency family from?
You can see how De Montmorency families moved over time by selecting different census years. The De Montmorency family name was found in the USA, and the UK between 1891 and 1920. The most De Montmorency families were found in United Kingdom in 1891. In 1920 there was 1 De Montmorency family living in New York. This was 100% of all the recorded De Montmorency's in USA. New York had the highest population of De Montmorency families in 1920.
Use census records and voter lists to see where families with the De Montmorency surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.