I thought of Rigoletto out of the blue just now.  I seem to recall my mother, a great opera fan, telling me that Rigoletto was a hunch-back.   I asked Jeeves if that was so.

Rigoletto (pronounced [riɡoˈletto]) is an opera in three acts by Giuseppe Verdi. … Its tragic story revolves around the licentious Duke of Mantua, his hunch-backed court jester Rigoletto and Rigoletto’s beautiful daughter Gilda.

You can’t make this shit up (though somebody, apparently, did).