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O'leary Family History

O'leary Name Meaning
Irish (Munster): Americanized form of Ó Laoghaire ‘descendant of Laoghaire’, a byname originally meaning ‘keeper of the calves’, from laogh ‘calf’. This was the name of a 5th-century king of Ireland.

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

547,568 Historical Documents with O'leary on Ancestry.com
194,645 Birth, Marriage, and Deaths
28,578 Military Records
29,032 Immigration Records
149,361 Census and Voter Lists
145,952 Member Trees

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Name Distribution of O'leary Families

  • Number of O'leary families
     52 - 101
     18 - 51
     1 - 17
     
    from the 1920 US Federal Census Data
  • Number of O'leary families
     2 - 1
     2 - 1
     1
     
    from the 1891 England and Wales Census Data
  • Number of O'leary families
     4 - 6
     2 - 3
     1
     
    from the 1891 Scotland Census Data

O'leary census records

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O'leary Family Origin

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The information for this chart came from the U.S. Immigration Collection at Ancestry.com. You can find out where the majority of the O'leary families were living before they immigrated to the U.S and learn where to focus your search for foreign records.

Immigration records can tell you an ancestor's name, ship name, port of departure, port of arrival, and destination.

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O'leary Immigration Information

from the New York Passenger Lists

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You can find out when most of the O'leary families immigrated to the United States. You can focus your search to immigration records dating from that era.

Immigration records can tell you an ancestor's name, ship name, port of departure, port of arrival and destination.

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Average Life Expectancy for O'leary

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An unusually short lifespan might indicate that your 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.

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O'leary Family Occupations

from 1880 Federal Census Data

O'leary census records

Census records can offer a lot of little known facts about your O'leary ancestors, such as occupation.

Occupation can tell you about your ancestors' social status and economic status.

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O'leary Civil War Service Records

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You can find out if your ancestors came primarily from the North of the South.

Military records can tell you an ancestor's birthplace, occupation, and even physical description.

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