Siennan Family History

You can see how Siennan families moved over time by selecting different census years. The Siennan family name was found in the USA in 1920. In 1920 there was 1 Siennan family living in New York. This was 100% of all the recorded Siennan's in USA. New York had the highest population of Siennan families in 1920.

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