O'callaghan Family History

You can see how O'callaghan families moved over time by selecting different census years. The O'callaghan family name was found in the USA, the UK, and Scotland between 1880 and 1920. The most O'callaghan families were found in USA in 1880. In 1891 there were 7 O'callaghan families living in Yorkshire. This was 100% of all the recorded O'callaghan's in United Kingdom. Yorkshire had the highest population of O'callaghan families in 1891.

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