The Duke of Manhattan was a title given to one of the leading figures in the city of New New York on the planet New Earth. Although his exact powers were unclear, he did have the power to create legally binding contracts on behalf of the Senate.
Biography
In the year 5,000,000,023, the Tenth Doctor and Rose Tyler encountered the Duke of Manhattan in a hospital run by the Sisters of Plenitude. He was suffering from Petrifold Regression, a disease that turned its victims to stone. He claimed that he suffered this disease despite having lived a life of charity and abstinence. Due to advances in medicine made by the Sisters, they were able to cure his disease, a cure that would subsequently be lost for another thousand years following the collapse of the order. The Duke was accompanied throughout his stay in hospital by Frau Clovis. He would come to see the Doctor as his good luck charm. (TV: New Earth)
He was mentioned 23 years later when the Doctor and Martha Jones returned to New New York. (TV: Gridlock)
Decrees
The senate passed several decrees regarding the Duke including: