- Olive
-
James 3459 b. 1828, d. 18 Apr 1881John 3459 b. 1828, d. 18 Apr 1881
- Oliver
-
Alfred 8951 b. 1840George 65 b. 1822John 3336 b. 1833, d. 31 Jul 1867John 3365 b. 1810, d. 31 Jul 1867William Lemon 6947 b. 1820, d. 9 Jan 1873
- Olley
-
John 6399 b. 1833, d. 3 Mar 1879
- Ollis
-
John 8953 b. 1841
- Olliver
-
John 3336 b. 1833, d. 31 Jul 1867John 3365 b. 1810, d. 31 Jul 1867
- Onion
-
Edward 8377 b. 1834, d. 26 Nov 1906
- Onslow
-
George 8651 b. 1833
- Oppenheim
-
Jacob 5213 b. 1830, d. 23 Dec 1860
- Opreu
-
Daniel 5425 b. 1838
- Orange
-
Thomas 4155 b. 1834, d. Dec 1899
- Orchard
-
Job 3394 b. 1833, d. 27 Apr 1868
- Orens
-
Isaac 3481 b. 1829
- Organ
-
James 6688 b. 1828
- Ormerod
-
John 4676 b. 1839, d. 5 Jul 1863
- Ormsby
-
Joseph 1625 b. 1818
- Ormsly
-
Joseph 1625 b. 1818
- Orpin
-
George 3596 b. 1826, d. 1889
- Orr
-
Hugh 5233 b. 1829John 5212 b. 1826, d. 4 Jun 1869John 8668 b. 1830
- Orricks
-
William 3121 b. 1823, d. 25 Sep 1865
- Orton
-
Joseph 8670 b. 1830
- Osbern
-
Joseph 3306 b. 1822, d. 14 Oct 1895
- Osboine
-
James 62 b. 16 May 1827, d. 15 Sep 1891