- Odell
-
Harriet (1879 - )Horace William (1905 - 1984)Percy John (1907 - )Rosebud Louisa May (1915 - )William Henry (1885 - 1918)
- Ogden
-
Ann (1902 - )Ernest (1920 - 1988)Esther Annie (1917 - 1989)
- Ogilvie
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Agnes Amelia (1876 - 1960)Emily Frances (1877 - )Jessie Mary (1873 - 1963)John Alexander (1909 - 1966)Margaret Alexandra (1887 - 1976)Robert John (1845 - 1911)Robert William (1879 - 1922)
- Old
- Oldcorn
-
Kathleen Annie (1901 - 1977)
- Oliff
-
John (1777 - 1846)Susan (1809 - )
- Oliver
-
Laura B (1880 - )Mary (1865 - b 1895)Reginald W (1879 - )Thomas (1880 - )William B (1850 - )
- Oller
-
Corinne Elizabeth (1904 - 1980)
- Olson
-
Gretchen Elaine (1935 - 2016)
- Oneill
-
Kenneth Henry (1929 - )
- Ongley
-
Albert (1863 - 1951)Binie Elizabeth (1889 - 1961)Henry (1822 - 1923)
- Oram
-
Joanna (1748 - 1826)Robert (1697 - 1782)Robert (1736 - )
- Orbell
- Orchard
-
Fanny (1862 - )
- Organ
-
Pamela Joyce (1937 - 1991)
- Ormiston
-
Violet Patricia (1932 - 2012)
- Ormond
-
Elizabeth (1745 - 1829)
- Ortiz Rubio
-
Maria del Refugio (1907 - 1978)
- Orton
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Annie E (1891 - 1998)Arthur Mark (1910 - 1984)John Edward (1865 - 1941)John Edward Jr. (1897 - 1953)Joyce Nannie (1925 - 1990)Mabel M (1902 - 1956)
- Osborn
-
Dennis Albert (1926 - 2012)Rose Hannah (1805 - 1855)