Although born in Dunstable, it appears that he moved to the Potton/Eyeworth area of Bedfordshire and became a farm bailiff. In about 1915, he inherited a small farming estate from a deceased relative in that area and continued to farm at Eyeworth until his death in 1930. His obituary confirms that he died from an undisclosed illness and that he was buried at Eyeworth church. A bit of business took me out to the Potton area during December and I spent half an hour looking round the pleasant church and churchyard; alas, no AG or any other Brown but I did find the headstone of Sidney Peel and his wife Delia. Sidney was the commanding officer of the Bedfordshire Yeomanry during the Great War, so quite a find. A very plain headstone and no mention of his military or other connections.
The only other avenue left open to me to complete the initial story of AG was to try and find some officer papers. That necessitated a trip to the National Archives. Brown is a very common surname and officer papers don't always reveal a second initial, especially the WO339 series, so the tip here is to consult the online index under WO338 and enter the former reference number into the catalogue; this beats slogging through the A Browns any day ! Happily I found AG's papers which showed that he applied to become an officer in September 1916. He had served previously in the Bedfordshire Yeomanry from about 1907 until 1912, reached the rank of Sergeant, but resigned due to the death of a cousin in a shooting accident. He also stated in his application that he had attended Dunstable Grammar School and I noted that his application was supported by L C R Thring, his old headmaster. AG would have attended DGS from about 1898 to 1904, over 60 years before I went through the same gates. Thring was head of the school from when it opened in 1888 until 1921 and his own son, Ashton, died as an officer in the Royal Field Artillery in 1917.