Personal Number: 124531 Rank: Second Lieutenant Name: Ralph Walford SELBY Unit: Grenadier Guards London Gazette : 2 April 1940 https://www.thegazette.co.uk/London/issue/34821/supplement/1901/data.pdf FOOT GUARDS. The undermentioned Cadets, from Sandhurst and 163rd Officer Cadet Training Units, to be 2nd Lts. 23rd Mar. 1940:— Gren. G'ds. Ralph Walford SELBY (124531).
See also: Person Page From The Grenadier Guards in the war of 1939-1945, by Nigel Nicolson and Patrick Forbes. v.2. Page 535