| Williamson | John William | 12558 | Trooper | Source: QSA Medal Rolls | 70th Company, 18th Btn, IY |
| Williamson | John Windham | | | BSACM Matabeleland 1893 (0). Commmissariat.
Source: BSACM rolls | Salisbury Horse |
| Williamson | Joseph | W14616 | Corporal | Served 23 Feb 1900 to 07 Nov 1900. Discharged completion of service No. 4 Co. as Trooper
Source: Nominal roll in WO127 | Border Horse |
| Williamson | Joseph | 43022 | Private | Source: QSA Medal Rolls | 146th Company, 32nd Btn, IY |
| Williamson | Joseph | 22267 | Trooper | Source: Nominal roll in WO127 | Commander-in-Chief's Bodyguard |
| Williamson | L | | | Source: QSA and KSA medal rolls | 65th Battery, RFA |
| Williamson | L | 29747 | Trooper | Source: QSA Medal Rolls | 110th Company, 2nd Btn, IY |
| Williamson | Lemia | | | Source: QSA and KSA medal rolls | 65th Battery, RFA |
| Williamson | Leslie Cecil | 3518 | Trooper | Source: OZ-Boer database | New South Wales, 3rd Contingent NSW Imperial Bushm |
| Williamson | Lewis | | | Source: QSA and KSA medal rolls | 65th Battery, RFA |
| Williamson | M | 35301 | Trooper | Source: QSA Medal Rolls | 41st Company, 4th Btn, IY |
| Williamson | M | 3998 | Private | 2nd Battalion
Demise: Died of disease 07 Jul 1900
Place: Pretoria
Source: In Memoriam by S Watt | Norfolk Regiment |
| Williamson | M | 3998 | Private | Died of disease. Pretoria, 7 July 1900
2nd Battalion.
Source: South African Field Force Casualty Roll | Norfolk Regiment |
| Williamson | M | 3011 | Private | Died of disease. Springfontein, 23 July 1900
2nd Battalion.
Source: South African Field Force Casualty Roll | Northumberland Fusiliers |
| Williamson | M E | | | W Squadron
Source: QSA and KSA medal rolls | Cape Colonial Forces |
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