When trying to gain access to Rosanna Calvierri's school for girls in Venice in 1580, Rory Williams used the psychic paper as a reference from "His Majesty the King of Sweden." (TV: The Vampires of Venice)
Oscar was King of Sweden in the late 19th century. In 1898 he had some of Claudio Tardelli's artwork displayed at Drottningholm Palace. (AUDIO: Grand Theft Cosmos)
Behind the scenes[]
In the real world, John III was the King of Sweden in 1580.