The Memorial Plaque is inscribed
SACRED TO THE MEMORY OF LIEUT THE HONBLE W.J. GRANVILLE CHETWYND 73RD REGIMENT SECOND SON OF VISCOUNT CHETWYND WHO WAS KILLED IN A CONFLICT WITH THE KAFFIRS BEYOND THE KEI RIVER ON THE 11TH OF JANUARY 1847 AGED 22 YEARS THIS TABLET IS ERECTED BY HIS BROTHER OFFICERS
Significance
Lieutenant Chetwynd was the second son of Richard Walter Chetwynd, 6th Viscount Chetwynd, whose coat-of-arms is on the tablet which was designed by John Denman.
Lt Chetwynd was killed east of the Kei River during the 7th Frontier War on 11 January 1847 while escorting a party of wounded back to base.
Further reading
Military Memorials in St George's Cathedral at Cape Town
On Heroes and Villains - The Times' reporting on the Cape Colony's Frontier Wars, 1818-1853
Memorials in the Cathedral
Lieutenant The Honourable W.J. Granville Chetwynd
Major Kenneth Ross Mackenzie, 2nd Battalion Seaforth Highlander
Gunner Frederick William Ratcliffe
Battle of Boomplaats Rifle Brigade Memorial
Battle of Boomplaats British Roll of Honour
Lt Col Frederick Miller VC Memorial
Captain George Pilkington, RE
Colonel Edmund Hartley VC, CMG
3rd Dragoon Guards Anglo-Boer War Roll of Honour