Dennessey Family History

You can see how Dennessey families moved over time by selecting different census years. The Dennessey family name was found in the USA in 1880. In 1880 there was 1 Dennessey family living in Michigan. This was 100% of all the recorded Dennessey's in USA. Michigan had the highest population of Dennessey families in 1880.

Use census records and voter lists to see where families with the Dennessey surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.