| Brown | William John Francis | | Lieutenant | Source: Nominal roll in WO127 | Western Light Horse |
| Brown | William Joseph | 856 | Private | Source: OZ-Boer database | Queensland, 1st Battalion Australian Commonwealth |
| Brown | William L | | | Source: Nominal roll in WO127 | Johannesburg Mounted Rifles |
| Brown | William Longmore | 4996 | Sergeant | Source: Nominal roll in WO127 | Thorneycroft's Mounted Infantry |
| Brown | William Maxwell | 119 | | Source: Medal rolls | Canada, 2nd Canadian Mounted Rifles |
| Brown | William Patrick | 4542 | Trooper | Source: Nominal roll in WO127 | Roberts' Horse |
| Brown | William Russell | 30 | | Occupation: Boiler Maker. Next of kin: Mother. Address: Observatory .
Source: Attestation paper in WO126 | Town Guard and District Mounted Troops |
| Brown | William Samuel | 2109 | | Source: Attestation papers. See image on this site. | Railway Pioneer Regiment |
| Brown | William Samuel | 2109 | Private | 4th RPR
Source: Nominal roll in WO127 | Railway Pioneer Regiment |
| Brown | William Stewart | 469 | Private | Source: OZ-Boer database | New South Wales, NSW Imperial Bushmen |
| Brown | William T T | | | Source: WO100/286 | Vryburg TG |
| Brown | William Thomas | 12193 | Private | Gun Section, 3rd Btn IY
Source: QSA Medal Rolls | Imperial Yeomanry |
| Brown | William Thomas | 3662 | Private | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | (Duke of Wellington's) West Riding Regiment |
| Brown | William Thomson | 23887 | Trooper | Source: QSA Medal Rolls | 19th Company, 6th Btn, IY |
| Brown | William Walter | 212 | | Source: Medal rolls | Canada, 2nd Canadian Mounted Rifles |
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