| Brennan | P | | | 5th Battalion
Source: QSA and KSA medal rolls | Manchester Regiment |
| Brennan | P | 4821 | Private | 1st Battalion
Source: QSA roll | (Princess Victoria's) Royal Irish Fusiliers |
| Brennan | P | 5377 | Private | 1st Battalion
Source: QSA roll | (Princess Victoria's) Royal Irish Fusiliers |
| Brennan | P J | 1600 | Trooper | Discharged 25 Feb 01 completion of service
Source: Nominal roll in WO127 | South African Light Horse |
| Brennan | Patrick | 25233 | Trooper | Source: Nominal roll in WO127 | Kitchener's Horse |
| Brennan | Patrick | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Inniskilling Fusiliers |
| Brennan | R | | | 3rd Battalion
Source: QSA and KSA medal rolls | (King's) Liverpool Regiment |
| Brennan | R | | Private | Served to 27 Jul 01.
Source: Nominal roll in WO127 | Cape Medical Staff Corps |
| Brennan | R | 7291 | Private | 5th Battalion
Source: QSA roll | Lancashire Fusiliers |
| Brennan | R | | | Source: QSA and KSA medal rolls | Royal Dublin Fusiliers |
| Brennan | R | 5220 | Sergeant | 2nd Btn. Wounded at Colenso. 15 Dec 1899.
Source: Natal Field Force Casualty Roll, page 187 line 28 | Royal Dublin Fusiliers |
| Brennan | R | 18685 | Gunner | Died of wounds. Elandsfontein, 24 February 1901
Accident
Source: South African Field Force Casualty Roll | 61st Battery, RFA |
| Brennan | R | | | 2nd Battalion
Source: QSA and KSA medal rolls | Northumberland Fusiliers |
| Brennan | R J | 90186 | Gunner | Demise: Died of disease - enteric fever 01 May 1900
Place: Pinetown. P Christian Hosp
Source: In Memoriam by S Watt | RGA, Southern Division, 16th Company |
| Brennan | R J | 90186 | Gunner | 16th Co, SD. Died of enteric at Pinetown. 2 May 1900.
Source: Natal Field Force Casualty Roll, page 29 line 52 | Royal Garrison Artillery |
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