| Barrett | Thomas Henry | 495 | Private | Source: OZ-Boer database | West Australia, 6th Mounted Infantry Contingent |
| Barrett | Thomas William | 40420 | Private | Source: QSA Medal Rolls | 139th Company, 31st Btn, IY |
| Barrett | Thomas William | 2701 | Trooper | Source: OZ-Boer database | New South Wales, 3rd Contingent NSW Imperial Bushm |
| Barrett | W | 35265 | Trooper | Source: QSA Medal Rolls | 49th Company, 9th Btn, IY |
| Barrett | W | 31175 | Trooper | Demise: Died of disease - pneumonia 10 May 1901
Place: Elandsfontein
Source: In Memoriam by S Watt | Roberts' Horse |
| Barrett | W | | | 3rd Battalion
Source: QSA and KSA medal rolls | Northamptonshire Regiment |
| Barrett | W | | | 2nd Battalion
Source: Medal rolls | Cheshire Regiment |
| Barrett | W | | | Source: WO100/283 | Mafeking Town Guard |
| Barrett | W | | | Source: QSA and KSA medal rolls | New Zealand, 6th Contingent |
| Barrett | W | | | Source: QSA and KSA medal rolls | 20th Battery, RFA |
| Barrett | W | | | 6th Battalion
Source: QSA and KSA medal rolls | (Duke of Cambridge's Own) Middlesex Regiment |
| Barrett | W | | | 3rd Battalion
Source: QSA and KSA medal rolls | (Buffs) East Kent Regiment |
| Barrett | W | 1681 | Regimental Sergeant Major | Source: QSA Medal Rolls | 22nd Company, 2nd Btn, IY |
| Barrett | W | | | 2nd Battalion
Source: QSA and KSA medal rolls | Hampshire Regiment |
| Barrett | W | | | Source: QSA and KSA medal rolls | 74th Battery, RFA |
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