| O'Neil | J H | 4574 | Lance Corporal | 4th Battalion
Demise: Died of disease 17 Jul 1900
Place: Kroonstad
Source: In Memoriam by S Watt | (Princess Louise's) Sutherland and Argyll Highland |
| O'Neil | J H | 4574 | Lance Corporal | Died of disease. Kroonstad, 17 July 1900
4th Battalion.
Source: South African Field Force Casualty Roll | (Princess Louise's) Sutherland and Argyll Highland |
| O'Neil | J T | | Assistant Surgeon | He died at Geluk, August 25th, 1900.
Source: Donner | Indian Medical Service |
| O'Neil | James | | | 2nd Battalion
Source: QSA and KSA medal rolls | (Duke of Albany's Ross-shire Buffs) Seaforth Highl |
| O'Neil | James | 20202 | Trooper | 2nd Brabant's Horse
Source: Nominal roll in WO127 | Brabant's Horse |
| O'Neil | James | 764 and 3420 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| O'Neil | Jan Jacobus | | | Prisoner number: 13310
Captured: Belfast 29 Sep 1900
Sent to: South Africa, Green Point
Age: 46
Address: Klipfontein
Source: Anglo Boer War Museum 2016 | Boer Forces |
| O'Neil | John | 44186 | Trooper | Source: QSA Medal Rolls | 136th Company, 30th Btn, IY |
| O'Neil | John | 442 | Private | Source: OZ-Boer database | West Australia, 6th Mounted Infantry Contingent |
| O'Neil | John | | Bearer | Joined 11 Dec 99
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| O'Neil | John | | Bearer | Source: Nominal roll in WO127 | Imperial Bearer Corps |
| O'Neil | John | 22262 | Trooper | Source: QSA Medal Rolls | 82th Company, 21st Btn, IY |
| O'Neil | John | 13771 | Trooper | Base Co
Source: QSA Medal Rolls | Imperial Yeomanry |
| O'Neil | John Joseph | 878 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| O'Neil | Joseph | | | Source: QSA and KSA medal rolls | 4th Battery, RFA |
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