| Barker | T H | 3766 | Private | QSA (1).
Source: QSA medal rolls | 10th (The Prince of Wales's Own Royal) Hussars |
| Barker | T P | 494 | Trooper | Demise: Killed in action 10 May 1901
Place: Ottosdal Near Korannafontein
Source: In Memoriam by S Watt | New South Wales, 2nd Contingent NSW Mounted Rifles |
| Barker | T P | 494 | Private | Killed in action. Korannafontein, 10 May 1901
Mounted Rifles
Source: South African Field Force Casualty Roll | New South Wales contingent |
| Barker | T R | | | Source: QSA and KSA medal rolls | (King's) Shropshire Light Infantry |
| Barker | T W | | Trooper | Frontier Wars. SAGS (1) 1879. Medal returned | Lydenburg Rifles |
| Barker | T W | | | Source: QSA and KSA medal rolls | (King's) Shropshire Light Infantry |
| Barker | T W | 56 | Private | Died of disease. Deelfontein, 15 June 1900
MI
Source: South African Field Force Casualty Roll | Tasmania contingent |
| Barker | T W | 56 | Private | Demise: Died of disease 15 Jun 1900
Place: Deelfontein
Source: In Memoriam by S Watt | Tasmania, 1st Contingent |
| Barker | Theodore | 140 | Trooper | QSA (1) DoM
Source: Mafeking Siege Account and Medal Roll | Protectorate Regiment |
| Barker | Theodore Hugh | | Civil Surgeon | Source: OZ-Boer database | New South Wales, Bearer Company |
| Barker | Theodore Hugh | | Civil Surgeon | Imperial Draft Contingent.
Source: Official Records of the Australian Military Contingents by P L Murray | Australian Army Medical Corps |
| Barker | Thomas | | Bearer | Joined 11 Dec 99
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Barker | Thomas | 15805 | Trooper | Source: QSA Medal Rolls | 77th Company, 8th Btn, IY |
| Barker | Thomas | | Orderly | Source: Nominal roll in WO127 | Imperial Hospital Corps |
| Barker | Thomas Howarth | 307 | Trooper | Served in 2nd KFS. Joined Durban 15 Aug 01 Discharged 26 Sep 01 inefficient
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
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