In 1043, the prince of Salerno,
Guaimar IV, had been acclaimed
Duke of Apulia and Calabria although the legitimacy of this title (as it was not officially recognized by any
universal power) could be considered juridically doubtful; in fact, in 1047, the emperor Henry III intervened to claim the ducal title. However, after 1059, the county was officially named
Ducato di Puglia e Calabria ("Duchy of Apulia and Calabria"), because
Robert Guiscard was named a "
duke" by
Pope Nicholas II. Salerno was conquered in 1077 by the Normans, and these territories were added to the Duchy of Apulia and Calabria and with this conquest, the Normans controlled all of continental southern Italy, with the exception of the small
Duchy of Naples. The next year, the capital was moved from Melfi to Salerno, and the Normans began to focus on completing the conquest of
Sicily. They gradually created, until 1091, the precursor of the
Kingdom of Sicily, the first unified state in southern Italy that was founded in 1130. Salerno remained the capital of this southern Italian political entity for half a century (from 1078 to 1130), the city flourished with the
Schola Medica Salernitana, the first medical school in Europe. ==List of counts and dukes==