- [S11] County Clerk's Office, Vital Records Greene County (Jefferson, Iowa: Greene County Clerk). Hereinafter cited as Vital Records Greene County.
- [S12] [Unknown author], Obituary James O'Brien (Jefferson, Iowa: The Jefferson Herald, December 2, 1914). Hereinafter cited as Obituary James O'Brien.
- [S13] Greene County Genealogical Society, Cemetery Scranton Township (Jefferson, Iowa: Greene County Genealogical Society, 1985). Hereinafter cited as Cemetery Scranton Township.
- [S119] James Murnane, 1834 Tithe Applotment, Dublin, County Dublin, National Archives of Ireland.
- [S120] James Murnane, 1850 Land Valuation, unknown repository address, unknown repository.
- [S373] John J. Day, May 21, 1910 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S374] John J. Day, January 6, 1920 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S377] Edmond Murphy, April 21, 1910 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S378] Edmond Murphy, January 4, 1920 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S379] Edmond Murphy, April 2, 1930 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S380] District of Columbia Marriages, 1811-1950, online <https://www.familysearch.org/search/collection/…>. Hereinafter cited as District of Columbia Marriages, 1811-1950.
- [S441] [Unknown author], Obituary John O'Brien (Carroll, Iowa: Carroll Daily Times Herald, May 6, 1963). Hereinafter cited as Obituary John O'Brien.
- [S442] Jeremiah O'Brien, June 14, 1900 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S443] Jeremiah O'Brien, April 29, 1910 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S444] Jeremiah O'Brien, January 8, 1920 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S447] Patrick O'Brien, June 14, 1900 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S457] [Unknown author], Obituary Margaret Melody (Carroll, Iowa: The Carrol Daily Times, October 8, 1958). Hereinafter cited as Obituary Margaret Melody.
- [S462] Elizabeth O'Brien Arkwright, April 23, 1940 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S595] James Walsh, January 1, 1905 Census Record, Provo, Utah, Church of the Latter Day Saints.
- [S600] Unknown author, Obituary Nora Day Garrity (Jefferson, Iowa: Slininger-Rossow Funeral Home, May 13, 2015). Hereinafter cited as Obituary Nora Day Garrity.
- [S601] County Clerk's Office, Vital Records Shelby County (Harlan, Iowa: Shelby County Clerk). Hereinafter cited as Vital Records Shelby County.
- [S674] Florida, U.S., Marriage Indexes, 1822-1875 and 1927-2001, online . Hereinafter cited as Florida, U.S., Marriage Indexes, 1822-1875 and 1927-2001.
- [S686] Cornelius O'Brien, 1826 Tithe Applotment, Dublin, County Dublin, National Archives of Ireland.
- [S708] North Carolina, U.S., Death Certificates, 1909-1976, online <https://www.ancestry.com>. Hereinafter cited as North Carolina, U.S., Death Certificates, 1909-1976.
- [S709] Otto Meotti, April 8, 1950 Census Record, Provo, Utah, Church of the Latter Day Saints.