Born in the spring of 1876, Walter Treliving was the son of commercial traveller James Rufus Treliving and Elizabeth Ricks. In 1881 the family lived in Northfield, Bridgwater, where Walter had two siblings. In 1891, aged 14, Walter was attending the Commercial Travellers Boarding School in Pinner in Middlesex. In 1901, now working as a commercial traveller, he was staying with his aunt Annie Ricks in 5 King Square. By 1911 he had set up home in 86 Severn Road, Weston Super Mare with his wife Mabel Annie (nee Broadrick, whom he had married in 1904) and five year old daughter Beryl. He was a Freemason, attached to the Perpetual Friendship Lodge Somerset No. 135.
He joined the army in about 1916, aged 40 and served in the army service corps. He served in France for the next two years. On 22 May 1918 the London Gazette recorded Treliving as one of the cadets made temporary 2nd lieutenants 15th April 1918.
After continued service, in September or October 1918 he was in Britain and recovering from Influenza in Woolwich. However, he received the news that his mother, residing at 100 Wembdon Road, had died on 6 November. He caught the train to Bridgwater on Friday 9 November. On the morning of Sunday 10 October 1918 he attended communion at Wembdon parish church, although he was suffering from pains he attributed to indigestion. Walking home after service with friends and family, while walking past Oakfield House at the bottom of Wembdon Road he fell from the pavement into the gutter, dead. The coroner later concluded that he had died of heart failure, which had been weakened by influenza and the emotional trauma of his mother's death. He was aged 42. On Monday 11 October both mother and son were buried in the same plot in the Wembdon Road Cemetery.