People — W
William O. Burgin
1877 – 1946
politician
William O'Byrne
1908 – 1951
cricketer
William O'Callaghan
1921 – 2015
military personnel
William O'Callaghan
1852 – 1877
politician
William O'Callaghan
1881 – 1967
politician
William Ó Cellaigh
William Ó Ciardhubháin
merchant
William O. Collins
1809 – 1880
politician
William Ó Con Ceanainn
William O'Connell
1852 – 1903
politician
William O'Connell
1929 – 2024
actor
William O'Connell Bradley
1847 – 1914
politician
William O'Connell
William O'Connor
1910 – 1987
politician
William O'Connor
b. 1986
darts player
William O'Connor
1864 – 1939
fencer
William O'Connor
1970 – 2018
illustrator
William O'Connor Morris
1824 – 1904
judge
William O. Cowger
1922 – 1971
politician
William O. Cromwell
b. 1860
politician
William O. Dapping
1880 – 1969
reporter
William O'Dea
1888 – 1955
William Ó Deorádhain
economist
William O'Doherty
1868 – 1905
politician
William O'Doherty
1835 – 1868
sculptor
William O'Donnell
1922 – 2002
politician
William O'Donnell
b. 1997
cricketer
William O'Donnell
1878 – 1947
politician
William O'Donnell
b. 1942
swimmer
William O'Donoghue
b. 1995
William O'Donohue
b. 1957
psychologist
William O'Donovan
1886 – 1955
politician
William O. Douglas
1898 – 1980
lawyer
William O'Dwyer
1890 – 1964
lawyer
William O. Farber
1910 – 2007
university teacher
William O. Gallery
1904 – 1981
military officer
William O'Gara
1931 – 2024
politician
William O. Goodman
1848 – 1936
businessperson
William O'Grady
b. 1952
linguist
William O'Grady
1924 – 1985
association football player
William O'Grady Haly
1811 – 1878
military personnel
William O'Grady
1801 – 1859
priest
William O. Gregg
William O'Halloran
1934 – 1994
cricketer
William O'Halloran
b. 1875
politician
William O'Hanlon
1863 – 1940
cricketer
William O'Hara
1816 – 1899
Catholic priest
William O'Hara Martin
1845 – 1901
banker
William O. Harbach
1919 – 2017
television director
William O. Head
1859 – 1931
politician
William O. Heffernan
politician
William O. Hotchkiss
1878 – 1954
geologist
William O. Howard
1923 – 2006
politician
William O. Jenkins
1878 – 1963
businessperson
William O'Leary
1894 – 1955
politician
William O'Leary
businessperson
William O'Leary
b. 1957
voice actor
William Ó Máille
William O'Malley
1853 – 1939
journalist
William O'Malley
1931 – 2023
actor
William O'Meara
b. 1998
William O'Meara
Catholic priest
William O. Mehrtens
1905 – 1980
lawyer
William O. Mitchell
1846 – 1930
politician
William Ó Mullally
dean
William O'Neal
1949 – 1990
William O'Neal Lockridge
1947 – 2011
William O' Neil
1848 – 1917
politician
William O'Neil
1933 – 2023
stockbroker
William O'Neill
1930 – 2007
politician
William O'Neill, 1st Baron O'Neill
1813 – 1883
politician
William O'Neill
b. 1947
lawyer
William O'Neill
b. 1848
military personnel
William O'Neill
rugby union player
William O. Owen
1859 – 1947
explorer
William O. Raymond
1853 – 1923
historian
William O. Reed
1902 – 1969
politician
William O'Reilly
1792 – 1844
politician
William O'Reilly
1864 – 1937
social scientist
William O. Richardson
b. 1955
politician
William O'Rourke
b. 1945
novelist
William O'Shannessy
b. 1999
rower
William O'Shaughnessy
1674 – 1744
military officer
William O'Shea
1840 – 1905
politician
William O'Shea
1906 – 1997
boxer
William O'Shea
1884 – 1945
Catholic priest
William O. Stanley
1903 – 1993
journalist
William O. Steele
1917 – 1979
writer
William O. Stephens
b. 1962
philosopher
William O'Sullivan
1829 – 1887
politician
William O'Sullivan
1873 – 1953
politician
William O. Taylor
1871 – 1955
publisher
William O. Taylor II
1932 – 2011
journalist
William O. Walker
1896 – 1981
publisher
William O. Wheatley, Jr.
b. 1944
journalist
William O. Wooldridge
1922 – 2012
military personnel
William Oakeley
1635 – 1695
politician
William Oakes
1799 – 1848
botanist
William Oakland
1939 – 2007
economist
William Oakley
b. 1868
cricketer