This name is on the St Andrew's War Memorial, Landor Road, Stockwell, London SW9
Robert T. Jackson
(Jackson, Robert T.)
Service no 568343
Lance Corporal, Royal Engineers, G.H.Q. Signal Coy
Died 6 July 1918
Son of A. J. and A. C. Jackson; husband of S. C. Jackson, of 5, Mordaunt St., Brixton, London.
Remembered at Mombasa British Memorial, Kenya and inside St Andrew's Church
Information from the 1911 census and from London Marriages and Banns, London Metropolitan Archives
In 1911 Robert Thomas Jackson was a 21-year-old correspondence clerk for a company of engineers, living at home with his mother, Alice Caroline Jackson, 53, and two siblings: Arthur Joseph Jackson, 25, a sorter for the GPO (General Post Office) and Alice Mary Jackson, 23, a draper's assistant at 105 Grantham Road.

In 1914 he volunteered for the war effort (as he was a correspondence clerk it is unsurprising that he was in the Signal Company), and on 15 May 1915 he married Louisa Caroline Cooper, 27 at St Andrew's Church. They both gave 5 Mordaunt Street, Brixton as their address (this did not necessarily mean they were "living together" at the time they married).

The National Roll of the Great War 1914-1918 says:
"...after his training [he] served at various stations on important duties with his unit. Drafted overseas to German East Africa in 1917, he took part in severe fighting during operations in that country and was unfortunately drowned whilst crossing a river during an engagement with the enemy. He was entitled to the General Service and Victory Medals."