 He was invalided back to England and died of his injuries at Tunbridge Wells in August 1918 aged 29.Jennings was part of a family with a number of cricketers in it.His father, also David Jennings, played for Devon in the Minor Counties Championship and was later the professional coach and head groundsman at Marlborough College, whilst his younger brothers George and Tom both played first-class cricket after World War I, George for Warwickshire and Tom for Surrey.