| Simpson | John | 20591 | Trooper | Source: QSA Medal Rolls | 28th Company, 4th Btn, IY |
| Simpson | John | 3867 | Private | QSA (5). Missing at Colesberg, 11 Feb 01. Rejoined. With 6th D.G. (No. 5127).
Source: QSA medal rolls | 1st (King's) Dragoon Guards |
| Simpson | John | 291 | | Source: Medal rolls | Canada, 1st Canadian Mounted Rifles |
| Simpson | John | 89 | Private | Source: OZ-Boer database | Queensland, 3rd Mounted Infantry Contingent |
| Simpson | John | | | 2nd Battalion
Source: QSA and KSA medal rolls | (Duke of Albany's Ross-shire Buffs) Seaforth Highl |
| Simpson | John | 1457 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Simpson | John | 9511 | Trooper | Source: Nominal roll in WO127 | Kitchener's Horse |
| Simpson | John | 28441 | Private | Source: Nominal roll in WO127 | Rand Rifles |
| Simpson | John | 18451843 | | Attested: Nov 1902. Source: CMP 51 | Cape Police |
| Simpson | John | | | 4th Battalion
Source: QSA and KSA medal rolls | (King's) Liverpool Regiment |
| Simpson | John | 28009 | Lance Corporal | Source: QSA Medal Rolls | 11th Company, 3rd Btn, IY |
| Simpson | John | 910 | Private | Source: OZ-Boer database | Queensland, 1st Battalion Australian Commonwealth |
| Simpson | John | 39671 | Private | Source: QSA Medal Rolls | 177th Company, 31st Btn, IY |
| Simpson | John A | 10031 | Trooper | Source: Nominal roll | French's Scouts |
| Simpson | John Alexander | 22583 | Trooper | Source: QSA Medal Rolls | 32nd Company, 2nd Btn, IY |
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