Helen Dunmore’s new novel concerns lives, consequential in their day, that pass away into utter oblivion. Appropriately, the ‘solitary and no doubt rather grim middle-aged man’ of the opening pages is unnamed and never appears again, once he discovers a forgotten grave near the pathway of the title. Bearing the image of a quill, the headstone commemorates a radical 18th-century writer, Julia Fawkes, who died in Bristol in 1793.