| Lewis | William Henry | 2996 | Trooper | 1st Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Lewis | William Henry | 402 | Driver | Source: OZ-Boer database | Victoria, 3rd Bushman's Contingent |
| Lewis | William Henry | | | Served 03 Jan 00 to 12 Mar 00.
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Lewis | William Herbert | 2169 | Trooper | Source: OZ-Boer database | New South Wales, 3rd Contingent NSW Mounted Rifles |
| Lewis | William Howard | 29905 | Bugler | Source: QSA Medal Rolls | 4th Co, 1st Btn, IY |
| Lewis | William James | 1513 | Sergeant | Source: Nominal roll in WO127 | Thorneycroft's Mounted Infantry |
| Lewis | William James | | Orderly | Source: Nominal roll in WO127 | Imperial Hospital Corps |
| Lewis | William John | 21377 | Trooper | Source: QSA Medal Rolls | 77th Company, 8th Btn, IY |
| Lewis | William John | | | Nominal roll #1 (L2) | Driscoll's Scouts |
| Lewis | William John | 24998 | Trooper | Source: QSA Medal Rolls | 1st Co, 1st Btn, IY |
| Lewis | William John | 313 | | Source: Medal rolls | Canada, 2nd Canadian Mounted Rifles |
| Lewis | William Richard | 23817 | Private | Source: QSA Medal Rolls | 16th Company, 5th Btn, IY |
| Lewis | William Thomas | 373 and 3780 | Trooper/Shoeing Smith | Served in 2nd KFS. Joined Cape Town 27 Aug 01 Discharged 28 Apr 02 medically unfit
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
| Lewis | William W | 19 | Pte | Source: QSA and KSA medal rolls | Middleton Town Guard |
| Lewis | Wm | | Trooper | BSACM Mashonaland 1897 (0).
Source: BSACM rolls | British South Africa Police |
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