Wow, a lot of information. So to summarise...
Benjamin Cooke "may" have been a volunteer in the Middlesex or Wandsworth volunteers during WW1.
Eric Cooke, his son, was definitely a Captain in the Royal Artillary, served in WW2 and lived to the ripe old age of 92.
Eric's wife's Uncle - Ernest Kemp was training at Fort Widley in 1911 for the Royal Field Artillery under Major Robert Geoghegan. He was photographed late 1915 and may have died in 1916.
Time for a death certificate I guess.
