I have pondered over this for a while wondering whether or not to post these but I feel the surname may be more than just a coincidence?
I haven't tried to work out anything more as I can't find enough evidence yet to connect them although others may be successful...
Marriage - Gerald Walter Gordon-Smith to Lilian Priscilla Vivian 01 Feb 1907 Durban, Natal, South Africa
http://www.rootschat.com/links/01ojl/Info. on anc. tree gives DoD as 23 Jan 1911 (no place of death given)...
Son Gerald Vivian Gordon-smith born 1907 Witwater, Western Cape, S/Africa died 1931 (anc. tree)
Death Notice 12 Jul 1931 aged 23 yrs
https://www.familysearch.org/ark:/61903/1:1:QPCC-YH4G (further details on image)
Death Gerald Gordon-Smith b 15 Nov 1907 died Dec Qtr 1987 Merton, Surrey, England
Vol 14 Pg 900
https://www.familysearch.org/ark:/61903/1:1:QVZW-MH15An entry here of a possibly living relative to the immediate above in the
Kent area, I'd noted Gordon Gordon-Smith had been in The Queen's Own (Royal West
Kent Regiment)
https://beta.companieshouse.gov.uk/officers/ubJcE7hKUiJkDLy8-EmRaeMsEZ4/appointmentsGerald A Gordon-Smith born 02 Oct 1929 (P.o.B not given), addresses between 1993 & 2000 include Maryland, Fairfax, Virginia, Miami, Florida, United States & Apo, U.S. Armed Forces - Europe" with possible relatives names included
https://www.familysearch.org/ark:/61903/1:1:KPDT-DDCAnnie