Duke of Apulia and Calabria

The County of Apulia and Calabria, later the Duchy of Apulia and Calabria, was a Norman country founded by William of Hauteville in 1042 in the territories of Gargano, Capitanata, Apulia, Campania, and Vulture. It became a duchy when Robert Guiscard was raised to the rank of duke by Pope Nicholas II in 1059.