Hi two things, the Robert G b 5th December 1938 could have died March qtr 1950 Fulham 5c 573 aged 11, also the family Lilian M Davidson was living with:-
Ivor W Garwood to Beatrice A John March qtr 1937 Pontypridd 11a 821
Keyboard86
EDIT The parents of Lilian M (May) and Beatrice A, could be William John who married an Alice Forrest March qtr 1906 Pontypridd 11a 744