History of your Surname
Get access to O%27halloran family records.Start a free trial

O%27halloran Family History

O%27halloran Name Meaning

Irish: Anglicized form of Gaelic Ó hAllmhuráin ‘descendant of Allmhurán’ (see Halloran).

Source: Dictionary of American Family Names ©2013, Oxford University Press


Similar surnames: Halloran, O'fallon, O'callahan, O'hanlon, O'hagan, Halligan, Hallahan

Search for a relative to learn more about your family history.

Hint: Try searching for a relative alive in 1940.

Black & white image of a young woman scientist

Where is the O%27halloran family from?

You can see how O%27halloran families moved over time by selecting different census years. The O%27halloran family name was found in the USA, Canada, and Scotland between 1871 and 1920. The most O%27halloran families were found in USA in 1880. In 1871 there was 1 O%27halloran family living in Aberdeenshire. This was 100% of all the recorded O%27halloran's in Scotland. Aberdeenshire had the highest population of O%27halloran families in 1871.
Use census records and voter lists to see where families with the O%27halloran surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.

What did your O%27halloran ancestors do for a living?

Census records can tell you a lot of little known facts about your O%27halloran ancestors, such as occupation. Occupation can tell you about your ancestor's social and economic status.

What O%27halloran family records will you find?

Census Records

There are 33,000 census records available for the last name O%27halloran. Like a window into their day-to-day life, O%27halloran census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search UK census records for O%27halloran

Passenger Lists

There are 5,000 immigration records available for the last name O%27halloran. Passenger lists are your ticket to knowing when your ancestors arrived in the UK, and how they made the journey - from the ship name to ports of arrival and departure.

View all O%27halloran immigration records

Draft Cards

There are 3,000 military records available for the last name O%27halloran. For the veterans among your O%27halloran ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all O%27halloran military records

You've only scratched the surface of O%27halloran family history

Discover More

What is the average O%27halloran lifespan?

Between 1991 and 2003, in the United States, O%27halloran life expectancy was at its lowest point in 2003, and highest in 1997. The average life expectancy for O%27halloran in 1991 was 81, and 56 in 2003.

View Social Security Death Index (SSDI) for O%27halloran

Discover the unique achievements of ancestors in the O%27halloran family tree

Explore Your Tree

Browse profiles of historical people with the O%27halloran last name

Search for another surname
Enter last name/surname
Start a 14-Day Free Trial