- O'Rourke
-
Patrick 5153 b. 1830, d. 21 May 1888
- O'Sullivan
-
William Alfred 224 b. 1826, d. 16 Jul 1890
- O'Wilkes
-
John 1614 b. 1820
- Oates
-
John 683 b. 1809, d. 2 May 1887Stephen 4015 b. 1824, d. 6 Apr 1871Thomas 5034 b. 1809, d. 17 Oct 1862William 5047 b. 1830, d. 11 Jul 1893
- Oats
-
John 683 b. 1809, d. 2 May 1887William 5047 b. 1830, d. 11 Jul 1893
- Obro
-
Henry 5106 b. 1839
- Offer
-
Henry 746 b. 1829, d. 25 Aug 1913
- Ogborn
-
Henry 2706 b. 1828, d. 8 Mar 1902
- Ogborne
-
James Henry 2706 b. 1828, d. 8 Mar 1902
- Ogilvie
-
William Lindsay 1010 b. 1831
- Ogle
-
Hans 822 b. 1819, d. 11 Nov 1874John 784 b. 1828Robert 783 b. 1831, d. 21 Sep 1884
- Oldfield
-
John 1205 b. 1824, d. 8 Nov 1900
- Olive
-
James 3459 b. 1828, d. 18 Apr 1881John 3459 b. 1828, d. 18 Apr 1881
- Oliver
-
George 65 b. 1822John 3336 b. 1833, d. 31 Jul 1867John 3365 b. 1810, d. 31 Jul 1867
- Olliver
-
John 3336 b. 1833, d. 31 Jul 1867John 3365 b. 1810, d. 31 Jul 1867
- Oppenheim
-
Jacob 5213 b. 1829, d. 23 Dec 1860
- Orange
-
Thomas 4155 b. 1834, d. Dec 1899
- Orchard
-
Job 3394 b. 1833, d. 27 Apr 1868
- Orens
-
Isaac 3481 b. 1829
- Ormerod
-
John 4676 b. 1839, d. 5 Jul 1863