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.
Pope John XI was the bishop of Rome and nominal ruler of the Papal States from March 931 to his death. The true ruler of Rome at the time was his mother, Marozia, followed by his brother Alberic II. His pontificate occurred during the period is known as Saeculum obscurum.
The Dukes of Swabia were the rulers of the Duchy of Swabia during the Middle Ages. Swabia was one of the five stem duchies of the medieval German kingdom, and its dukes were thus among the most powerful magnates of Germany. The most notable family to rule Swabia was the Hohenstaufen family, who held it, with a brief interruption, from 1079 until 1268. For much of that period, the Hohenstaufen were also Holy Roman Emperors. With the death of Conradin, the last Duke of Hohenstaufen, the duchy itself disintegrated although King Rudolf I attempted to revive it for his Habsburg family in the late 13th century.
Saeculum obscurum, also known as the Pornocracy or the Rule of the Harlots, was a period in the history of the Papacy during the first two-thirds of the 10th century, following the chaos after the death of Pope Formosus in 896 which saw seven or eight papal elections in as many years. It began with the installation of Pope Sergius III in 904 and lasted for sixty years until the death of Pope John XII in 964. During this period, the popes were influenced strongly by a powerful and allegedly corrupt aristocratic family, the Theophylacti, and their relatives and allies. The era is seen as one of the lowest points of the history of the Papal office.
The Duke of Spoleto was the ruler of Spoleto and most of central Italy outside the Papal States during the Early and High Middle Ages. The first dukes were appointed by the Lombard king, but they were independent in practice. The Carolingian conquerors of the Lombards continued to appoint dukes, as did their successors the Holy Roman Emperors. In the 12th century, the dukes of Spoleto were the most important imperial vassals in Italy.
The Duchy of Gaeta was an early medieval state centered on the coastal South Italian city of Gaeta. It began in the early ninth century as the local community began to grow autonomous as Byzantine power lagged in the Mediterranean and the peninsula due to Lombard and Saracen incursions.
The Duchy of Amalfi or the Republic of Amalfi was a de facto independent state centered on the Southern Italian city of Amalfi during the 10th and 11th centuries. The city and its territory were originally part of the larger ducatus Neapolitanus, governed by a patrician, but it extracted itself from Byzantine vassalage and first elected a duke in 958.
The Duchy of Naples began as a Byzantine province that was constituted in the seventh century, in the reduced coastal lands that the Lombards had not conquered during their invasion of Italy in the sixth century. It was governed by a military commander (dux), and rapidly became a de facto independent state, lasting more than five centuries during the Early and High Middle Ages. Naples remains a significant metropolitan city in present-day Italy.
Medieval Amalfi was ruled, in the tenth and eleventh centuries, by a series of dukes, sometimes called dogi, corresponding with the republic of Venice, a maritime rival throughout the Middle Ages. Before the title of Duke of Amalfi was formally established in 957, various patricians governed the territory. Amalfi established itself as one of the earliest maritime trading powers renowned throughout the Mediterranean, considered for two centuries, one of the most powerful of the maritime republics.
Richard III, also known as Richard of Caleno, was the Norman count of Carinola and last quasi-independent Duke of Gaeta, ruling from 1121 to his death. From 1113, he was regent of Gaeta for his cousin or nephew, Duke Jonathan; in 1121 he succeeded him. As duke he was a nominal vassal of the Princes of Capua, to whom he was related.
Sergius I was the first duke of Naples of his dynasty, often dubbed the "Sergi," which ruled over Naples for almost three centuries from his accession in 840 until the death of his namesake Sergius VII in 1137.
John II was the duke of Amalfi from 1029 to 1069 with multiple interruptions. He was the son of Sergius II and Maria, sister of Pandulf IV of Capua. He was the last significant duke of Amalfi before the Norman conquest of 1073.
Stephen II was the duke of Naples during an important transitional period in its history, from 755 to his death. He was styled as eminentissimus consul and was the leader of the local aristocracy when he was appointed by the patrician of Sicily. By the end of his reign, through a rupture with the Byzantine Empire, Naples was practically independent. After his abdication, Naples experienced a period of crisis until the election of Sergius I in 840.
Caesar the Brave was the admiral of the fleet of the Duchy of Naples during the reigns of his father, Sergius I, and brother, Gregory III.
Sergius was the name of a Roman Patrician Gens, Sergia, originally from Alba Longa. It is also found as Sergios. It may refer to:
John III was the consul and duke of Gaeta from some time between October 984 and January 986 until his death.
Sergius VI was the magister militum and duke of Naples from 1077 to his death. He was the son of the Neapolitan senator John, and succeeded his uncle, John's elder brother, Sergius V. His sister Inmilgia married Duke Landulf of Gaeta. His reign is very obscure because of the slight documentary evidence.
Marinus II was the Duke of Naples from 968 to his death. He was the son and successor of John III and brought Naples back into the Byzantine fold, receiving the title eminentissimus consul et dux, atque imperialis anthipatus patricius. In 970, Marinus did homage for his duchy to the Byzantine patrician Eugene after the imprisonment of Pandulf Ironhead. He then participated in the siege of Capua. He devastated the surrounding countryside and took an enormous booty before an army of Otto I, Holy Roman Emperor forced the Greeks to retreat. In 974, Marinus allied with Manso I of Amalfi and Landulf of Conza to depose Gisulf I of Salerno. They were defeated, however, by the intervention of Pandulf Ironhead. On 4 November 981, the Emperor Otto II was in Naples, probably with the permission of Marinus, who was moving away from his pro-Byzantine policy. He was succeeded by his son Sergius III.
The Norman conquest of southern Italy lasted from 999 to 1139, involving many battles and independent conquerors.
