Thannessy Family History

You can see how Thannessy families moved over time by selecting different census years. The Thannessy family name was found in the USA in 1920. In 1920 there was 1 Thannessy family living in Illinois. This was about 50% of all the recorded Thannessy's in USA. Illinois and 1 other state had the highest population of Thannessy families in 1920.

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