Someone who is good at telling stories or anecdotes.
1) He had the reputation of being an excellent raconteur.
2) She was quite a colourful raconteur.
French, from Middle French, from raconter which means 'to tell', from Old French, from re- +aconter, acompter which means 'to tell'.
story-teller, anecdotist, narrator, relator, taleteller, fabulist, fableist