Humphrey Herbert Orlando Bridgeman was born on 22 July 1891, the third son of Gertrude Cecilia and Brig.-Gen. Hon. Francis Charles Bridgeman, and the grandson of Orlando George Charles Bridgeman, 3rd Earl of Bradford.
A former Cordwallis, Maidenhead & Cheltenham school pupil, Bridgeman entered Harper Adams Agricultural College on 29 January 1909, aged 17, to study the Agricultural Diploma course and left in March 1909 with the intention of going to Canada the following month. His name appears on the passenger list for the Laurentic, which left Liverpool for Montreal on 29 April 1909.
He served with the Household Battalion and was reported missing on 1 May 1917 at Rouex in France aged 25, according to the memorial to him at St Bartholomew's Church, Tong, Shropshire. His death is officially recorded as 11 May 1917 and he is remembered with honour at the Arras Memorial (Bay 1)
The Arras Memorial commemorates nearly 35,000 soldiers of the British, South African and New Zealand forces with no known grave. Most of those commemorated were killed in the Battle of Arras, fought between 9 April and 16 May 1917.