| Brennan | F | | | 1st Battalion
Source: QSA and KSA medal rolls | Royal Dublin Fusiliers |
| Brennan | F | | Leader | Died of disease. Howick, 6 June 1901
Source: South African Field Force Casualty Roll | Imperial Yeomanry Hospital |
| Brennan | F | 3411 | Private | Demise: Died of disease - enteric fever 16 May 1900
Place: Ladysmith
Source: In Memoriam by S Watt | 13th Hussars |
| Brennan | F H | | Lieutenant | QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Kimberley TG |
| Brennan | F W | | Ordinary Seaman | QSA (2) TH RoL. Ref: 190.529.
Source: QSA medal rolls | HMS Terrible |
| Brennan | Francis Dawse | | Trooper | Unit: C. troop. Nationality: English. Age: 25, Address: Tamar Ho, St Mark/'s Rd, N.Kensington, Ldn.
Source: List of Jameson raiders | Unknown |
| Brennan | Frank | 1430 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Brennan | Fredk | | | 4th Battalion
Source: QSA and KSA medal rolls | (Prince Albert's) Somerset Light Infantry |
| Brennan | G | | | 5th Battalion
Source: QSA and KSA medal rolls | Royal Dublin Fusiliers |
| Brennan | G | 5411 | Private | Died of disease. Kroonstad, 8 June 1900
1st Battalion.
Source: South African Field Force Casualty Roll | Royal Irish Regiment |
| Brennan | G | | | 2nd Battalion
Source: QSA and KSA medal rolls | Grenadier Guards |
| Brennan | G | | | 2nd Battalion
Source: Medal rolls | Royal Munster Fusiliers |
| Brennan | G T | | | 2nd Battalion
Source: QSA and KSA medal rolls | Grenadier Guards |
| Brennan | H | 5519 | Private | 2nd Battalion
Demise: Died of abscess of the liver 07 Jan 1900
Place: Pmburg
Source: In Memoriam by S Watt | Royal Dublin Fusiliers |
| Brennan | H | 5529 | Private | Killed in action. Near Ventersburg, 19 August 1900
2nd Battalion.
Source: South African Field Force Casualty Roll | Royal Irish Rifles |
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