| O'Connell | M | | | 2nd Battalion
Source: QSA and KSA medal rolls | Bedfordshire Regiment |
| O'Connell | M | 7234 | Private | Died of disease. Hoopstad, 20 July 1900
3rd Battalion.
Source: South African Field Force Casualty Roll | South Wales Borderers |
| O'Connell | M | 6037 | Private | Slightly wounded. Rhenoster Kop, 29 November 1900
1st Battalion.
Source: South African Field Force Casualty Roll | Royal Munster Fusiliers |
| O'Connell | M | | | 1st Battalion
Source: Medal rolls | Royal Munster Fusiliers |
| O'Connell | M | | | 1st Battalion
Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
| O'Connell | M | 3847 | Sapper | QSA (2) CC OFS. KSA
TNA ref 158/5; 314/90 | Royal Engineers, Field Company, 38th |
| O'Connell | M | 1535 | Private | Frontier Wars. SAGS (1) 1877-8-9 | Royal Warwickshire Regiment |
| O'Connell | M | | 2nd Lieutenant | Frontier Wars. SAGS (1) 1879 | King's Royal Rifle Corps |
| O'Connell | M H | 804 | Trooper | Demise: Died of wounds 03 Feb 1902
Place: Elandsfontein
Source: In Memoriam by S Watt | South African Constabulary |
| O'Connell | M H | 804 | Private | Dangerously wounded. Elandsfontein, 1 February 1902
C Division. Self-inflicted. Died 3 February
Source: South African Field Force Casualty Roll | South African Constabulary |
| O'Connell | M H | | | Source: QSA and KSA medal rolls | South African Constabulary |
| O'Connell | M J | 2446 | Sergeant | 6th Battalion
Source: QSA roll | (Duke of Cambridge's Own) Middlesex Regiment |
| O'Connell | M J | 50B/933 | Private | Frontier Wars. SAGS (0) | (Duke of Cambridge's Own) Middlesex Regiment |
| O'Connell | Martin | | | Nominal roll #1 (O1) | Driscoll's Scouts |
| O'Connell | Michael | 202 | | Source: Medal rolls | Canada, 1st Canadian Mounted Rifles |
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