| Irwin | Percy Stewart | | | Source: QSA and KSA medal rolls | New Zealand, 9th Contingent |
| Irwin | R | 7204 | Private | Demise: Died of disease - enteric fever 01 Jul 1900
Place: Bloemfontein
Source: In Memoriam by S Watt | Canada, Lord Strathcona's Horse |
| Irwin | R | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Irish Rifles |
| Irwin | R | 7204 | Private | Died of disease. Bloemfontein, 1 July 1900
Source: South African Field Force Casualty Roll | Canada, 2nd Royal Canadian Regiment of Infantry |
| Irwin | R | 7204 | Private | Slightly wounded. Jacobsrust, 1 May 1900
Source: South African Field Force Casualty Roll | Canada, 2nd Royal Canadian Regiment of Infantry |
| Irwin | R | | | 2nd Battalion
Source: QSA and KSA medal rolls | Gloucestershire Regiment |
| Irwin | R S | | Trooper | Natal 1906 (0)
Source: Recipients of the Natal 1906 Medal | Natal Carbineers |
| Irwin | Robert | 7204 | | Source: Medal rolls | Canada, 2nd Royal Canadian Regiment of Infantry |
| Irwin | Robert | 33251 | Private | Source: QSA Medal Rolls | 61st Company, 17th Btn, IY |
| Irwin | Robert | 35154 | Trooper | Source: QSA Medal Rolls | 46th Company, 12th Btn, IY |
| Irwin | S | 36/1493 | Private | Frontier Wars. SAGS (1) 1879 | (Prince Albert's) Somerset Light Infantry |
| Irwin | T | 4591 | Private | QSA (3)
Source: List of QSAs with the clasp Talana from the Talana book | (Princess Victoria's) Royal Irish Fusiliers |
| Irwin | T | | | 5th Battalion
Source: QSA and KSA medal rolls | Royal Dublin Fusiliers |
| Irwin | T | | | 1st Battalion
Source: QSA and KSA medal rolls | East Lancashire Regiment |
| Irwin | T | 4591 | Private | 1st Battalion
Source: QSA roll | (Princess Victoria's) Royal Irish Fusiliers |
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