James Garner m Frances Mary Eley Q3 1897 Sheffield. Edward given as age 10 in 1911 born Sheffield.
No apparent Great War service records for an Edward Garner of Barnsley (or Sheffield).
IF he joined in 1914 and went overseas there would be a medal record. IF he joined and his age was later discovered he would either have been thrown out or retained in UK as under age for overseas, again no medal record.
All a bit shaky from the military records standpoint.
MaxD