O'calaghan Family History

You can see how O'calaghan families moved over time by selecting different census years. The O'calaghan family name was found in the USA, and Scotland between 1880 and 1891. The most O'calaghan families were found in USA in 1880. In 1880 there were 3 O'calaghan families living in Pennsylvania. This was about 50% of all the recorded O'calaghan's in USA. Pennsylvania had the highest population of O'calaghan families in 1880.

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