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Best Genealogy Sites to Search Records for O'Brien Surname / Last Name

Learn where genealogists search family records for your "O'Brien" surname & last name. Here are trusted sources for genealogy record search by YourRoots data.

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Top Genealogy Sources for Records for O'Brien Surname / Last Name

We’ve compiled data from YourRoots Map to determine which genealogy sites and sources are most frequently used to research the “O'Brien” surname. The list below is sorted by popularity, but remember—even lesser-known resources can be incredibly helpful. Genealogy research is personal and unique, so you never know where you might find that important record.
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Learn more about link surname / last name origin, history, and meaning on YourRoots Map


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Where to Search Records for O'Brien Surname / Last name for free: FamilySearch availability analysis

Below is a comprehensive list of popular genealogy sources alogside with which one is available on FamilySearch for free.

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The full list of genealogy record sources for O'Brien Surname / Last name


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1920 United States Federal Census
1940 United States Federal Census
1930 United States Federal Census
1900 United States Federal Census
1910 United States Federal Census
U.S., School Yearbooks, 1900-2016
U.S., Find a Grave® Index, 1600s-Current
U.S., Social Security Death Index, 1935-2014
U.S., Newspapers.com™ Marriage Index, 1800s-current
Australia, Death Index, 1787-1985
U.S., Public Records Index, 1950-1993, Volume 1
Massachusetts, U.S., Death Index, 1970-2003
1950 United States Federal Census
1911 England Census
1901 England Census
1870 United States Federal Census
1850 United States Federal Census
1860 United States Federal Census
Australia, Birth Index, 1788-1922
1861 England Census
New South Wales, Australia, Assisted Immigrant Passenger Lists, 1828-1896
1881 England Census
1871 England Census
U.S., City Directories, 1822-1995
U.S., Newspapers.com™ Obituary Index, 1800s-current
U.S., Obituary Collection, 1930-Current
1880 United States Federal Census
U.S., World War I Draft Registration Cards, 1917-1918
U.S., World War II Draft Cards Young Men, 1940-1947
California, U.S., Death Index, 1940-1997
U.S., Social Security Applications and Claims Index, 1936-2007
1891 England Census
1901 Census of Canada
England & Wales, Civil Registration Birth Index, 1916-2007
Web: Oklahoma, Find A Grave Index, 1800-2012
Wisconsin, U.S., Birth Index, 1808-1907
Web: Minnesota, Find A Grave Index, 1800-2012
1830 United States Federal Census
Missouri, U.S., Birth Registers, 1847-2003
England & Wales, Civil Registration Birth Index, 1837-1915
England & Wales, Civil Registration Marriage Index, 1916-2005
Massachusetts, U.S., Birth Index, 1860-1970
Missouri, U.S., Death Certificates, 1910-1971
U.S., Cemetery and Funeral Home Collection, 1847-Current
Beckley Post-Herald (Beckley, West Virginia)
Indiana, U.S., Marriage Index, 1800-1941
U.S., World War I Troop Transport Ships, 1918-1919

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