Roger II was King of Sicily and Africa, son of Roger I of Sicily and successor to his brother Simon. He began his rule as Count of Sicily in 1105, became Duke of Apulia and Calabria in 1127, then King of Sicily in 1130 and King of Africa in 1148.
William I, called the Bad or the Wicked, was the second king of Sicily, ruling from his father's death in 1154 to his own in 1166. He was the fourth son of Roger II and Elvira of Castile.
Roger Borsa was the Norman Duke of Apulia and Calabria and effective ruler of southern Italy from 1085 until his death.
Robert II was the count of Aversa and the prince of Capua from 1127 until his death.
Jordan, count of Ariano, was the ruler of the county of Ariano in the eastern Campania during the reign of the Duke William II. He was the son and successor of Count Herbert and Altrude of Buonalbergo.
Grimoald Alferanites was the prince of Bari from 1121 to 1132.
George of Antioch was the first to hold the office of ammiratus ammiratorum in the Norman Kingdom of Sicily. He was a Syrian-born Byzantine Christian of Greek ancestry. He was born in Antioch, whence he moved with his father, Michael, and mother to Tunisia following the First Crusade. He and his parents found employment under the Zirid emir, Tamim ibn Muizz. George fell out with Tamim's son and successor, Yahya, and secretly left for Christian Sicily by stealing away in disguise aboard a Palermitan ship harbored in Mahdia. Upon arrival in the Sicilian capital, George went immediately to the palace and found service with the Norman count, Roger II.
Ranulf II was the count of Alife and Caiazzo, and duke of Apulia. He was a member of the Italo-Norman Drengot family which dominated the Principality of Capua for most of the century between 1050 and 1150. Ranulf's wife, Matilda, was the sister of King Roger II of Sicily.
The Battle of Nocera or Scafati was the first major battle of Roger II of Sicily and the first of his two major defeats at the hands of Count Ranulf of Alife.
Sergius VII was the thirty-ninth and last duke of Naples. He succeeded his father John VI on the Neapolitan throne in 1122 at a time when Roger II of Sicily was rising rapidly in power. When Roger succeeded as duke of Apulia in 1127 and was crowned king in 1130, the fate of Naples hinged on Sergius' relations with the Sicilian court.
Alexander of Telese was an Italian chronicler and historian, and the abbot of San Salvatore, near Telese, in southern Italy from before 1127 to before November 1143.
The Battle of Rignano was the second great defeat of the career of Roger II of Sicily and, like the first, the Battle of Nocera, it too came at the hands of Ranulf II, Count of Alife. The prime difference was the position of the two combatants.
Simon, bastard son of Roger II of Sicily, was declared Prince of Taranto by his father in 1148, on the death of Roger III, Duke of Apulia, the eldest legitimate son of Roger II.
Gilbert was a Norman Count of Gravina from 1159 until 1167. His father Bertrand was the illegitimate son of Rotrou III, Count of Perche. He was a cousin of Margaret of Navarre, the queen of Sicily. He arrived in Sicily sometime around 1159 and, through Margaret's influence, was created Count of Gravina in Apulia immediately.
Geoffrey the Elder was an Italo-Norman nobleman. A nephew of Robert Guiscard through one of his sisters, he was the count of Conversano from 1072 and the lord of Brindisi and Nardò from 1070, until his death.
Alexander was the second count of Conversano (1085–1132), the son and successor of Geoffrey the Elder.
Robert of Selby was an Englishman, a courtier of Roger II and chancellor of the Kingdom of Sicily. It is likely that his name indicates that he was from Selby in Yorkshire. He probably journeyed to Sicily about 1130. In his train was Thomas Brun.
The Hauteville was a Norman family originally of seigneurial rank from the Cotentin. The Hautevilles rose to prominence through their part in the Norman conquest of southern Italy. By 1130, one of their members, Roger II, was made the first King of Sicily. His male-line descendants ruled Sicily until 1194. Some Italian Hautevilles took part in the First Crusade and the founding of the Principality of Antioch (1098).
The Drengots were a Norman family of mercenaries, one of the first to head to Southern Italy to fight in the service of the Lombards. They became the most prominent family after the Hautevilles.
The Norman conquest of southern Italy lasted from 999 to 1139, involving many battles and independent conquerors.