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 1939, General Labourer and Unpaid Domestic Duties were the top reported jobs for men and women in the UK named O'callaghan. 4% of O'callaghan men worked as a General Labourer and 40% of O'callaghan women worked as an Unpaid Domestic Duties. Some less common occupations for Americans named O'callaghan were Joiner and Unpaid Domestic

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

Top Male Occupations in 1939

  • General Labourer
  • Builders Labourer
  • General Labourer Heavy Worker
  • Joiner

Top Female Occupations in 1939

  • Unpaid Domestic Duties
  • Private Means
  • Housewife
  • Unpaid Domestic

*We display top occupations by gender to maintain their historical accuracy during times when men and women often performed different jobs.

O'callaghan Historical Records

What O'callaghan family records will you find?

Census Record

There are 46,000 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 1891 UK census records for O'callaghan

Passenger List

There are 10,000 immigration records available for the last name O'callaghan. 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'callaghan immigration records

Draft Card

There are 5,000 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 Ancestors

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