O'nagan Family History

You can see how O'nagan families moved over time by selecting different census years. The O'nagan family name was found in Scotland in 1871. In 1871 there was 1 O'nagan family living in Ayrshire. This was 100% of all the recorded O'nagan's in Scotland. Ayrshire had the highest population of O'nagan families in 1871.

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