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

O%27regan Family History

O%27regan Name Meaning

Irish: Anglicized form of Gaelic Ó Riagain ‘descendant of Riagán’, a personal name of uncertain origin, perhaps akin to ríodhgach ‘impulsive’, ‘furious’. There are two families of this surname, in Meath and Munster; traditionally they both claim descent from a nephew of Brian Boru called Riagán (see Regan).

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


Similar surnames: Regan, O'ryan, O'dea, Cregan, O'dean, O'hagan, Drugan, Donegan

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%27regan family from?

You can see how O%27regan families moved over time by selecting different census years. The O%27regan family name was found in the USA, and Scotland between 1851 and 1920. The most O%27regan families were found in USA in 1880. In 1880 there were 17 O%27regan families living in Iowa. This was about 19% of all the recorded O%27regan's in USA. Iowa and 1 other state had the highest population of O%27regan families in 1880.
Use census records and voter lists to see where families with the O%27regan surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.

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

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

What O%27regan family records will you find?

Census Records

There are 19,000 census records available for the last name O%27regan. Like a window into their day-to-day life, O%27regan census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search US census records for O%27regan

Passenger Lists

There are 4,000 immigration records available for the last name O%27regan. Passenger lists are your ticket to knowing when your ancestors arrived in the USA, and how they made the journey - from the ship name to ports of arrival and departure.

View all O%27regan immigration records

Draft Cards

There are 2,000 military records available for the last name O%27regan. For the veterans among your O%27regan ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all O%27regan military records

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

Discover More

What is the average O%27regan lifespan?

Average O%27regan life expectancy in 1996 was 32 years. This was lower than the general public life expectancy which was 74.

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

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

Explore Your Tree

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

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