- O'Sullivan
- Oakley
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Amelia b. 8 Jul 1847, d. 22 Sep 1938Avery May b. 1925, d. 4 Sep 2015Chloris Ellen Rose b. 18 Apr 1922, d. 14 Sep 2008
Herbert Leslie b. 4 Feb 1896
- Odlum
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William Charles b. 27 Sep 1900, d. 30 Jan 1968
- Ogden
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Clyde b. c 1902, d. 16 Jun 1981David James b. 6 May 1934, d. 21 Oct 2000
- Oliffe
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Jack b. 24 Apr 1929, d. 2 Nov 2012
- Oliver
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George b. 13 Feb 1772, d. 13 Apr 1834Gordon b. 1928, d. 28 Sep 2016
Mary Jane b. 15 Feb 1859, d. 29 Jul 1933
Matthew b. 31 Oct 1826, d. 6 May 1890
Matthew b. 4 Aug 1863, d. 22 Jun 1949Minnie Smith b. 24 Sep 1899, d. 11 Sep 1994
- Olsen
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Flora Eugenie b. 11 Oct 1876, d. 21 Mar 1961
- Olsson
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Lars Olaf Martin b. 17 Jun 1917, d. 30 Apr 1985
- Oram
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John b. 2 Feb 1677, d. 26 Feb 1747Sarah b. c 1717, d. Dec 1770
- Orchard
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Nellie b. c 1888, d. 15 Oct 1932
- Ornberg
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Greta b. 18 Feb 1798, d. 29 Feb 1880
- Orrock
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Agnes b. 13 Nov 1814, d. 31 Aug 1901James b. c 1682, d. 27 Jan 1735Robert b. c 1717, d. 1798Robert b. 11 May 1753
- Osborn
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Doris Mary b. 1900, d. 23 Dec 1980Minnie Ethel Mary b. 1890, d. 28 Mar 1953Sydney b. 26 Mar 1866, d. 1 Dec 1921William John b. c 1824, d. 5 Nov 1894
- Ostle
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Thomas b. 1 Jan 1862, d. 28 Jun 1924William Barwick b. 15 Dec 1885, d. 24 Jun 1961