But Carlo Hoffmann , an 11-year-old jailer 's son who found the bottle on the beach at Robben Island off Cape Town after winter storms , will send his letter back by ordinary mail on Thursday , the post office said .
<response> But <person>Carlo Hoffmann</person> , an 11-year-old jailer 's son who found the bottle on the beach at <location>Robben Island</location> off <location>Cape Town</location> after winter storms , will send his letter back by ordinary mail on Thursday , the post office said . </response>