Discover people named Cornelius O'Leary
Explore historical records on MyHeritage, the leading platform for discovering family history internationally. Shed light on the life of people named Cornelius O'Leary through birth, marriage, and death records, censuses, and more.
Cornelius Francis O'Leary, 1881 - 1935
MyHeritage Family Trees
Cornelius Francis O'Leary, 1916 - 1952
MyHeritage Family Trees
Cornelius Francis Neil O'Leary, 1933 - 2018
MyHeritage Family Trees
Cornelius S. O'Leary, 1869 - 1924
MyHeritage Family Trees
Cornelius O'Leary, 1860 - 1946
MyHeritage Family Trees
Cornelius O'Leary, 1898 - 1955
MyHeritage Family Trees
Cornelius Mary O'Leary, 1839 - 1903
MyHeritage Family Trees
Cornelius Humphrey (red) O'leary, 1847 - 1915
MyHeritage Family Trees
Cornelius Joseph O'Leary, 1944 - 1991
MyHeritage Family Trees
Cornelius Francis O'Leary, 1887 - 1960
MyHeritage Family Trees
Cornelius Francis O'Leary, 1881 - 1968
MyHeritage Family Trees
Cornelius Xavier "Con" O'Leary, 1921 - 1968
MyHeritage Family Trees
Cornelius O'LEARY, Circa 1795 - Circa 1853
MyHeritage Family Trees
Cornelius "Con" O'Leary, 1887 - 1969
MyHeritage Family Trees
Cornelius (Neily) O'Leary, 1948 - 2007
MyHeritage Family TreesCornelius O'Leary, 1829 - 1911
United States Obituary Index from OldNews.comCornelius O'Leary, 1881 - 1960
United States Obituary Index from OldNews.comCornelius (Con) O'Leary, 1874 - 1921
United States Obituary Index from OldNews.comCornelius O'Leary, 1881 - 1960
United States Obituary Index from OldNews.comCornelius John O'Leary, 1892 - 1922
Australia Obituary Index from OldNews.comCornelius Daniel O'Leary, Circa 1879 - 1931
Australia Obituary Index from OldNews.comCornelius O'Leary, Circa 1870 - 1891
Australia Obituary Index from OldNews.comCornelius Daniel O'Leary, Circa 1854 - 1917
Australia Obituary Index from OldNews.comCornelius P. O'Leary in Record-Journal - Feb 7 1990
Newspaper Name Index, USA, Canada, and AustraliaCornelius O'Leary in South Australian Register (Adelaide, SA) - July 8 1869
Newspaper Name Index, USA, Canada, and AustraliaCornelius John O'Leary, Circa 1912 - 1915
Rhode Island Deaths, 1850-1946Cornelius O'Leary, Circa 1836 - 1911
Rhode Island Deaths, 1850-1946Cornelius O'Leary, Circa 1842 - 1886
Rhode Island Deaths, 1850-1946Cornelius O'Leary, Circa 1869 - 1903
Rhode Island Deaths, 1850-1946Cornelius Artur O'Leary, 1917 - 1957
Arizona Death CertificatesCornelius O'Leary, 1885 - 1963
Arizona Death CertificatesCornelius A. O'Leary, 1919 - 1951
Arizona Death CertificatesCornelius O'Leary, 1864 - 1928
New York City Deaths, 1866-1948Cornelius O'Leary, 1919 - 1936
New York City Deaths, 1866-1948Cornelius O'Leary, Circa 1871 - 1934
New York City Deaths, 1866-1948Cornelius O'Leary, Circa 1861 - 1928
New York City Deaths, 1866-1948Cornelius O'Leary, 1878 - 1915
Michigan DeathsCornelius O'Leary, 1856 - 1934
Michigan DeathsCornelius O'Leary, 1892 - 1919
Michigan DeathsCornelius O'Leary, died 1916
Michigan DeathsCornelius O'Leary, 1853 - 1924
Maryland DeathsCornelius O'Leary, 1897 - 1985
Maryland DeathsCornelius O'Leary, 1893 - 1984
Maryland DeathsCornelius O'Leary, 1924 - 2008
Maryland DeathsCornelius O'Leary, 1909 - 1988
New Jersey Death Index, 1920-1929, 1949-2017Cornelius Jr O'Leary, died 1902
New Jersey Death Index, 1920-1929, 1949-2017Cornelius O'Leary, died 1902
New Jersey Death Index, 1920-1929, 1949-2017Cornelius Bryan O'Leary, 1917 - 1998
BillionGravesCornelius J. 'Neil' O'Leary, 1939 - 2021
BillionGravesCornelius Mark O'Leary, 1931 - 2005
BillionGravesCornelius Patrick (Pat) O'Leary, 1930 - 2015
BillionGravesCornelius O'Leary, Circa 1850 - Circa 1914
Names & Stories in Newspapers from OldNews.com (Massachusetts, Maine, New Hampshire, Vermont)Cornelius O'Leary, Circa 1853 - 1898
Names & Stories in Newspapers from OldNews.com (Massachusetts, Maine, New Hampshire, Vermont)Cornelius O'Leary, Circa 1880 - Circa 1935
Names & Stories in Newspapers from OldNews.com (Massachusetts, Maine, New Hampshire, Vermont)Cornelius O'Leary, died 1885
Names & Stories in Newspapers from OldNews.com (Massachusetts, Maine, New Hampshire, Vermont)Cornelius J. O'Leary, Circa 1884 - 1917
Massachusetts Deaths, 1916-1919Cornelius O'Leary, Circa 1857 - 1917
Massachusetts Deaths, 1916-1919Cornelius O'Leary, Circa 1835 - 1917
Massachusetts Deaths, 1916-1919Cornelius O'Leary, 1927 - 2006
Famous People Throughout HistoryCornelius O'Leary, 1897 - 1971
Famous People Throughout HistoryCornelius O'Leary, Circa 1917 - 1944
Commonwealth War Graves, 1914-1921, 1939-1947Cornelius O'Leary, Circa 1899 - 1918
Commonwealth War Graves, 1914-1921, 1939-1947Cornelius O'Leary, died 1915
Commonwealth War Graves, 1914-1921, 1939-1947Cornelius O'Leary, Circa 1894 - 1917
Commonwealth War Graves, 1914-1921, 1939-1947Cornelius Daniel O'Leary, Circa 1843 - 1906
Australia, Names & Stories in Newspapers from OldNews.comCornelius O'Leary, Circa 1861 - 1906
Australia, Names & Stories in Newspapers from OldNews.comCornelius Patrick O'Leary, died 1888
Australia, Names & Stories in Newspapers from OldNews.comCornelius O'Leary, died 1940
Australia, Names & Stories in Newspapers from OldNews.comEnter a few names and MyHeritage will build your family tree and deliver new insights about Cornelius O'Leary
Get started Import family tree (GEDCOM)
- Conn O'leary
- Cornel O'leary
- Cornelious O'leary
- Corny O'leary
- Ireland 42%
- USA 40%
- United Kingdom 9%
- Australia 8%
- Other 1%
The first name Cornelius has its origins in ancient Rome, derived from the Latin name "Cornelius," which is believed to be linked to the Latin word "cornu," meaning "horn." This name was historically associated with the Cornelii family, a prominent patrician family in Rome, suggesting a noble lineage. The name Cornelius has been borne by various saints and popes, enhancing its significance in Christian contexts, particularly in the Catholic Church. The meaning of the name often connotes strength and leadership, reflecting the characteristics of those who initially bore it. Variations of Cornelius can be found across different cultures, including "Cornel" in Dutch, "Cornelio" in Italian and Spanish, and "Kornel" in Polish, each with slight differences in pronunciation and spelling. The name has maintained its popularity over centuries, often associated with wisdom and authority, making it a timeless choice in various regions.
The last name O'Leary is of Irish origin, derived from the Gaelic surname "Ó Laoghaire," which means "descendant of Laoghaire." The name Laoghaire itself is believed to be derived from the word "laogha," meaning "calf" or "warrior," suggesting a connection to strength or nobility. O'Leary is primarily associated with the province of Munster in Ireland, particularly in County Kerry and County Cork, where the family has historical roots dating back to the early medieval period. The name is often linked to the ancient Gaelic nobility and has been borne by various notable figures throughout Irish history. Variations of the surname include O'Leary, Leary, and O'Leery, with differences in spelling and pronunciation reflecting regional dialects and linguistic influences. The name has also spread beyond Ireland, with many individuals bearing it in the United States and other English-speaking countries, often retaining its original form or adapting it slightly to fit local phonetics.
- Family history and relatives
- Photos and scanned original documents
- Specific dates and locations of life events
- Military service, residence, and occupation
- Full names, maiden names, and ages of ancestors and relatives




















