On their way from the airport, when they pass in the car in front of a fresco of Saint George fighting against the dragon, Ms. Keener says that Saint George is the Saint Patron of Genova. Now, it's true that Saint George has a strong link to the history of the city: the banner bears the cross of Saint George, in the middle ages the Bank which funded expeditions overseas (by the way it's the building that shows the fresco seen in the movie) was named after Saint George etc. but the Patron of Genova, since XIII century, is John the Baptist and he came to be after Genoese crusaders (First crusade) brought back from Holy Land his ashes, which are still kept in the Cathedral.