It was probably not just the cold that killed him during his journey, but rather all the unfamiliar antigens he came into contact with along the journey. Being constantly cold can lower your immune system, but it was contact with foreign pathogens that probably did him in. Of course my romantic version of his death is he was assassinated by jealous fencing masters or some other threatened courtier at his destination.
It was probably not just the cold that killed him during his journey, but rather all the unfamiliar antigens he came into contact with along the journey. Being constantly cold can lower your immune system, but it was contact with foreign pathogens that probably did him in. Of course my romantic version of his death is he was assassinated by jealous fencing masters or some other threatened courtier at his destination.