| O'Hagan | J | | | 1st Battalion
Source: Medal rolls |
| O'Hallahan | T | | | 3rd Battalion
Source: Medal rolls |
| O'Halloran | M | | | 2nd Battalion
Source: Medal rolls |
| O'Halloran | M | 3909 | Private | 1st Battalion
Demise: Died of disease - pneumonia 25 Jun 1901
Place: Charlestown
Source: In Memoriam by S Watt |
| O'Halloran | M | 3909 | Private | Died of disease. Charlestown, 25 June 1901
1st Battalion.
Source: South African Field Force Casualty Roll |
| O'Halloran | T | | | 2nd Battalion
Source: Medal rolls |
| O'Halloran | W | | | 2nd Battalion
Source: Medal rolls |
| O'Hallovan | M | | | 1st Battalion
Source: Medal rolls |
| O'Hallovan | P | | | 1st Battalion
Source: Medal rolls |
| O'Hallovan | S | | | 1st Battalion
Source: Medal rolls |
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