- O'Neil
-
James 4478 b. 1830John 4335 b. 1830John 5140 b. 1830Michael 4329 b. 1833Peter 7505 b. 1842, d. 10 Jun 1890Peter 8954 b. 1829Stephen 2591 b. 1830Terence 4391 b. 1832
- O'Neill
-
John 2529 b. 1835John 4335 b. 1830Joseph 9541 b. 1846Michael 4329 b. 1833Stephen 2591 b. 1830Terence 4391 b. 1832
- O'Pra
-
Daniel 5425 b. 1838
- O'Reilly
-
John Boyle 9843 b. 28 Jun 1844, d. 10 Aug 1890
- O'Riordan
-
Patrick 9851 b. 1847, d. May 1871
- O'Rourke
-
Patrick 5153 b. 1828, d. 21 May 1888Thomas 8097 b. 1836
- O'Sullivan
-
William Alfred 224 b. 1826, d. 16 Jul 1890
- O'Wilkes
-
John 1614 b. 1820
- Oakden
-
Thomas 5415 b. 1830, d. 10 Aug 1861
- Oakes
-
John 8161 b. 1838
- Oakley
-
Israel 6689 b. 1838William 6687 b. 1831
- 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