| Crooks | E | 13582 | Driver | Died of disease. Piet Retief, 19 February 1901
Source: South African Field Force Casualty Roll | J Battery, RHA |
| Crooks | F | | | Source: QSA and KSA medal rolls | 79th Battery, RFA |
| Crooks | F M | | | 1st Battalion
Source: WO100/281 | Grahamstown TG |
| Crooks | G | | | 1st Battalion, Volunteer Service Company
Source: QSA and KSA medal rolls | Leicestershire Regiment |
| Crooks | G | | | Source: QSA and KSA medal rolls | New Zealand, 6th Contingent |
| Crooks | G J | 65B/925 | Private | Frontier Wars. SAGS (1) 1879 | Connaught Rangers |
| Crooks | George | 1459 | Trooper | Source: Nominal roll in WO127 | Thorneycroft's Mounted Infantry |
| Crooks | H | | | Source: QSA and KSA rolls | British South Africa Police |
| Crooks | H J | | | Source: QSA and KSA medal rolls | Peninsula Horse |
| Crooks | H J S | 94 | Private | QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Kimberley Volunteer Regiment |
| Crooks | Henry | | | Attested: May 1903. Source: CMP8 | Cape Police |
| Crooks | J | | | 1st Battalion
Source: QSA and KSA medal rolls | King's Own Scottish Borderers |
| Crooks | J | | | Source: WO100/286 | Uitenhage TG |
| Crooks | J | 1961 | Trooper | 1st Life Guards. QSA (3). Now serving with South African Constabulary.
Source: QSA medal rolls | Life Guards |
| Crooks | J | | | 1st Battalion
Source: QSA and KSA medal rolls | (Princess of Wales's Own) Yorkshire Regiment |
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