We use story-teller in two senses, and when we speak of Sir John Mandeville we use it in both.

This is the highly entertaining 'Voyage and Travels of Sir John Mandeville.

These things I know for very sooth, for I had them from that pious Christian and valiant knight, Sir John de Mandeville, who stopped twice at Beaulieu on his way to and from Southampton, and discoursed to us concerning what he had seen from the reader's desk in the refectory, until there was many a good brother who got neither bit nor sup, so stricken were they by his strange tales.