Ocallahan Family History

You can see how Ocallahan families moved over time by selecting different census years. The Ocallahan family name was found in the USA, the UK, and Canada between 1840 and 1920. The most Ocallahan families were found in USA in 1920. In 1891 there were 5 Ocallahan families living in Lancashire. This was about 50% of all the recorded Ocallahan's in United Kingdom. Lancashire had the highest population of Ocallahan families in 1891.

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