There are medal records for a Cecil John Pearce 16052, 2nd Grenadier Guards.
The 1914-15 Star roll shows that he disembarked in France on 23/11/1914.
There's a January 1915 hospital record (No.4 Stationary Hospital ) showing that he was suffering from frostbitten feet. Age 20 years and 3 months.
Other than that, his records appear not to have survived. Most WW1 army records were destroyed by enemy bombing in WW2.