Oreilly Family History

You can see how Oreilly families moved over time by selecting different census years. The Oreilly family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Oreilly families were found in USA in 1920. In 1891 there were 115 Oreilly families living in Lancashire. This was about 29% of all the recorded Oreilly's in United Kingdom. Lancashire had the highest population of Oreilly families in 1891.

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