An article in the Express & Star 24 February 1915 tells of the “thrilling experience” of Trooper J. Duffield of the Royal Horse Guards. Apparently he had been captured by the Germans but escaped in the night by shooting his sentry and “making a run for it”. He found a spare horse and manage to rejoin his regiment. This was told in a letter to his mother at 89 Oak Street. The article also states that he had recently recovered from a wounded knee and was currently in London.
In the 1901 census, there is a 15-year-old James Duffield living at that address, so this is clearly the same man. James Duffield was born in Wolverhampton in 1885. In 1901, he appears at 89 Oak Street living with his parents, Reuben and Harriet, along with his brothers Bernard, Ernest and Percy, and sisters Edith and Gertrude. By this date, James has become a commercial clerk.
I have not been able to find much further information about this man, including any records of marriage or death, other than the fact that his regimental number was 1192.