There's actually an award-winning animated short called "Le Pauvre Bossu" - it's based on a fairy story.
As to why someone's used it in Herefordshire - I did hear once of a personnel manager who never liked to write "pregnant" next to an employee's name when they left to have a baby, so he would write enceinte instead, on the grounds that this wasn't so generally obvious. (Only problem was he thought this was pronounced enchant�e!) Perhaps the registrar thought that "poor hunchback" was a bit abrupt.