John Pepys was born in Devon in 1890. His father was Captain Arthur Pepys, retired Captain of King’s Royal Rifle Corps, another infantry regiment. John was educated at the Military College at Sandhurst. He became a 2nd Lieutenant in the K.O.Y.L.I. in 1910.
On the outbreak of war, he went to France with the 2nd K.O.Y.L.I. in August 1914. John had a short experience of the war. He reached the front with the British Expeditionary Force on the 14th of August. He was killed three hours after going into action as a machine-gun officer on the 23rd of August, just 9 days after he arrived at the front. He was 24.
He is buried at Hautrage Military Cemetery, near Mons.