Lord Vetinari makes featured appearances in the Discworld novels Sourcery, Guards! Guards!, Moving Pictures, Reaper Man, Men at Arms, Feet of Clay, Jingo, Interesting Times, Soul Music, The Fifth Elephant, The Truth, The Last Hero, Going Postal, Thud!, Making Money and Unseen Academicals. Night Watch features him in his youth. In The Colour of Magic, Rincewind is brought before "the Patrician" but it is not clear whether this Patrician is Vetinari or his predecessor, Mad Lord Snapcase, or possibly even Homicidal Lord Winder, although the description of this Patrician does not seem to tally with that of Vetinari, as the Patrician in question is, for example, described as obese – a trait his two predecessors did possess, but which he lacks.
Pratchett has stated on Usenet that the Patrician in this case is indeed Vetinari, and that he simply lost weight due to the stress of his job.Upon being pressed, he admitted that the only real difference is that he has become a better writer since that time. It is also a reflection of the fact that the Discworld timeline is extremely uncertain.
