Mehmed II (born 30 March 1432), commonly known historically as Mehmed the Conqueror, is the Ottoman sultan in the campaign period. His earlier reign, conflict with John Hunyadi and return to the throne in 1451 remain part of his political background. Campaign divergence: although ordinary history makes Mehmed the conqueror of Constantinople in 1453, that conquest belongs to the hobgoblin Ninefold Dominion here. The Ottoman state remains separate, ambitious and militarily important, but does not share sovereignty with the Dominion.