O'callaghan Family History

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O'callaghan Name Meaning

Irish: from Gaelic Ó Ceallacháin ‘descendant of Ceallachán’, a diminutive of the personal name Ceallach, possibly meaning ‘lover of churches’, from ceall ‘church’, or (more likely) ‘bright-headed’, from cen ‘head’ + lach ‘light’. This name was borne by a 10th-century king of Munster, from whom many present-day bearers of the surname claim descent.

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


Similar surnames: Callahan, O'callahan, Hallahan, Callanan, Callan, Colahan, Galligan

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O'callaghan Family Origin

Where is the O'callaghan family from?

O'callaghan Family Occupations

What did your O'callaghan ancestors do for a living?

In 1880, Keeping House, Laborer and Carpenter were the top 3 reported jobs worked by O'callaghan. A less common occupation for the O'callaghan family was Catholic Priest. The most common O'callaghan occupation in the USA was Keeping House. 15% of O'callaghan's were Keeping Houses.

View Census data for O'callaghan | Data not to scale

  • Keeping House

    15%
  • Laborer

    12%
  • Carpenter

    4%
  • Catholic Priest

    4%

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

O'callaghan Historical Records

What O'callaghan family records will you find?

Census Record

There are 3,000 census records available for the last name O'callaghan. Like a window into their day-to-day life, O'callaghan census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search 1940's US census records for O'callaghan

Passenger List

There are 642 immigration records available for the last name O'callaghan. 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'callaghan immigration records

Draft Card

There are 1,000 military records available for the last name O'callaghan. For the veterans among your O'callaghan ancestors, military collections provide insights into where and when they served, and even physical descriptions.

View all O'callaghan military records

You've only scratched the surface of O'callaghan family history.

O'callaghan Life Expectancy

What is the average O'callaghan lifespan?

Between 1992 and 2003, in the United States, O'callaghan life expectancy was at its lowest point in 1996, and highest in 1998. The average life expectancy for O'callaghan in 1992 was 45, and 54 in 2003.

View Social Security Death Index (SSDI) for O'callaghan

An unusually short lifespan might indicate that your O'callaghan ancestors lived in harsh conditions. A short lifespan might also indicate health problems that were once prevalent in your family. The SSDI is a searchable database of more than 70 million names. You can find birthdates, death dates, addresses and more.

Famous O'callaghan Family

Is anyone famous hiding in your tree?

Martin Luther King, Jr.1929 - 1968 (39)
Ella Fitzgerald1918 - 1996 (78)
Mark Twain1835 - 1910 (74)
Nikola Tesla1856 - 1943 (86)
Albert Einstein1879 - 1955 (76)
Frank Lloyd Wright1867 - 1959 (91)
Amelia Earhart1897 - 1939 (41)
James Dean1931 - 1955 (24)
Martin Luther King, Jr.1929 - 1968 (39)
Ella Fitzgerald1918 - 1996 (78)
Mark Twain1835 - 1910 (74)
Nikola Tesla1856 - 1943 (86)
Albert Einstein1879 - 1955 (76)
Frank Lloyd Wright1867 - 1959 (91)
Amelia Earhart1897 - 1939 (41)
James Dean1931 - 1955 (24)
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