Marco (The Masque of Mandragora)

Marco of San Martino was described as the "companion" of Duke Giuliano during the latter's rocky transition to power. As such, he was a Giuliano loyalist in the struggle against Count Federico. His exact title was never precisely defined.

However, his support of Guiliano was absolute. He was once chained in the dungeon of San Martino's castle but steadfastly refused to say anything against his friend, despite the fact that doing so might have eased his punishment.

He tended to advise Giuliano to take a more aggressive stance against Federico and his men. In one notable example, he advised that the captured Federico loyalist, Rossini, should be severely punished. Giuliano instead chose to see Rossini dealt with according to sanctioned legal principles.

Although he basically trusted the Fourth Doctor and Sarah Jane Smith, he likely would have preferred a more straightforward approach to dealing with Federico.


 * ''Marco's sexuality has occasionally been considered by fandom. Some have suggested that he and Giuliano might be lovers.  However, it is also possible to view Giuliano's relationship with Sarah as vaguely romantic.  The narrative, however, fails to address his sexuality in any definitive way.