| Irwin | C | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Irish Rifles |
| Irwin | C | | Private | Natal 1906 (1)
Source: Recipients of the Natal 1906 Medal | Natal Rangers |
| Irwin | Charles | 1131 | | Attested: Feb 1902. Source: CMP 24 | Cape Police |
| Irwin | D | | | 1st Battalion
Source: Medal rolls | Royal Munster Fusiliers |
| Irwin | D | 4221 | Private | 1st Battalion
Demise: Died of disease 15 Aug 1901
Place: Pmburg
Source: In Memoriam by S Watt | (Prince of Wales's Volunteers) South Lancashire Re |
| Irwin | D | 4221 | Private | Died of disease. Pietermaritzburg, 15 August 1901
1st Battalion.
Source: South African Field Force Casualty Roll | (Prince of Wales's Volunteers) South Lancashire Re |
| Irwin | Damuel | | Trooper | Source: Nominal roll in WO127 | Commander-in-Chief's Bodyguard |
| Irwin | David | 9494 | Private | Source: QSA Medal Rolls | 54th Company, 13th Btn, IY |
| Irwin | E | | | Source: QSA and KSA rolls | British South Africa Police |
| Irwin | E A | | Reverend | Source: QSA Medal Rolls | Army Chaplain's Department |
| Irwin | Edward | 35745 | Corporal | Source: QSA Medal Rolls | 112th Company, 11th Btn, IY |
| Irwin | F | | | Source: Medal rolls | Canada, Lord Strathcona's Horse |
| Irwin | Francis Thomas | 36086 | Trooper | Source: QSA Medal Rolls | 101st Company, 5th Btn, IY |
| Irwin | Frank B | 7648 | | Source: Medal rolls | Canada, 2nd Royal Canadian Regiment of Infantry |
| Irwin | G | 7732 | Sapper | QSA (2) CC SA02
TNA ref 158/90 | Royal Engineers, Fortress Company, 46th |
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