Viceroy (Earth-2356)

Viceroy is a title that exists in various cultures throughout the galaxy. In the Trade Federation, a wealthy commerce guild ruled by San'Shyuum, that title was borne by the organization's leader. On the planet of Alderaan, an individual bearing the titles of Viceroy and First Chairman occupied high responsibilities. Gar Saxon was the Imperial Viceroy of Mandalore, a planet under occupation of the Galactic Empire at the time.

Source

 * https://starwars.fandom.com/wiki/Viceroy.