Atenulf I (died 910), called the Great (Latin magnus), was the prince of Capua from 7 January 887 and of Benevento from 899, when he conquered that principality. He also used the title princeps gentis Langobardorum: "prince of the Lombard people," an echo of the title used by the earliest prince of Benevento following the collapse of Lombard cohesion in 774.
The son of Landenulf, gastald of Teano, Atenulf, through his influence and conquests, succeeded in vindicating his Lombard family's pretensions to princely status, à la those of Benevento and Salerno. From 879, Capua had been contested between several candidates, but, by 887, Atenulf had removed his brothers and cousins from contention and become sole prince with the assistance of the hypatus Athanasius of Naples. In the next year (888), he was at war with Athanasius over "Liburnia." They fought an indecisive battle at S. Carzio on the Clanio.
Atenulf then turned his attention to Benevento, which had recently been under Byzantine and then Spoletan control. He conquered it from the once-deposed Prince Radelchis II in 899 and was acclaimed prince in Santa Sofia in Benevento in January 900. He was opposed by the one-time regent of Benevento, the Bishop Peter, whom he exiled to Salerno. Having united most of the Lombard Mezzogiorno, he directed his aggression towards the Saracens of the Garigliano.
Atenulf allied with Amalfi and Gregory IV of Naples and attacked and defeated the Saracens in 903. He made himself a vassal of the Byzantines in order to receive military assistance, but got none. He spent the rest of his life preparing for a major second expedition. He died before its fruition, though it resulted in the famous and successful Battle of Garigliano in 915. For his successes against the Muslims, he was the dedicatee of a poem of Eugenio Vulgario. Atenulf was succeeded by his son Landulf I, whom he had associated in the princeship in 901. Atenulf declared the two principalities of Capua and Benevento inseparable and instituted the principle of co-rule between sons and brothers which was to guide the principality until its division in 981.
The Duchy of Benevento was the southernmost Lombard duchy in the Italian Peninsula that was centred on Benevento, a city in Southern Italy. Lombard dukes ruled Benevento from 571 to 1077, when it was conquered by the Normans for four years before it was given to the Pope. Being cut off from the rest of the Lombard possessions by the papal Duchy of Rome, Benevento was practically independent from the start. Only during the reigns of Grimoald and the kings from Liutprand on was the duchy closely tied to the Kingdom of the Lombards. After the fall of the kingdom in 774, the duchy became the sole Lombard territory which continued to exist as a rump state, maintaining its de facto independence for nearly 300 years, although it was divided after 849. Benevento dwindled in size in the early 11th century, and was completely captured by the Norman Robert Guiscard in 1053.
Guaimar IV was Prince of Salerno (1027–1052), Duke of Amalfi (1039–1052), Duke of Gaeta (1040–1041), and Prince of Capua (1038–1047) in Southern Italy over the period from 1027 to 1052. From 1041 to 1052 the Duke of Napoli was his vassal. He was an important figure in the final phase of Byzantine authority in the Mezzogiorno and the commencement of Norman power. He was, according to Amatus of Montecassino, "more courageous than his father, more generous and more courteous; indeed he possessed all the qualities a layman should have—except that he took an excessive delight in women."
Pandulf I Ironhead was the Prince of Benevento and Capua from 943 until his death. He was made Duke of Spoleto and Camerino in 967 and succeeded as Prince of Salerno in 977 or 978. He was an important nobleman in the fight with the Byzantines and Saracens for control of the Mezzogiorno in the centuries after the collapse of Lombard and Carolingian authority on the Italian Peninsula. He established himself over almost the whole of the southern half of Italia before his death in March 981.
Pandulf IV was the Prince of Capua on three separate occasions.
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 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.
Guaimar I was the prince of Salerno from 880, when his father entered the monastery of Monte Cassino in August. His parents were Prince Guaifer and Landelaica, daughter of Lando I of Capua. From 877, he was associated with his father on the throne, a practice which had begun with the previous dynasty and continued until the end of Salernitan independence in 1078.
Guaimar II was the Lombard prince of Salerno from 901, when his father retired to a monastery, to his death. His father was Guaimar I and his mother was Itta. He was associated with his father in the principality from 893. He was responsible for the rise of the principality: he restored the princely palace, built the palace church of San Pietro a campanile, and restored gold coinage.
Landulf I, sometimes called Antipater, was a Lombard nobleman and the Prince of Benevento and of Capua from 12 January 901, when his father, Atenulf I, prince of Capua and conqueror of Benevento, associated his with him in power.
Landulf II, called the Red, was the Lombard prince of Benevento and prince of Capua from 939 or 940, when his father, Landulf I, first associated him with the government. His mother was Gemma, daughter of Athanasius of Naples. He may have been associated as early as 933, when his elder brother, Atenulf III, was made co-regent. His uncle Atenulf II died in 940 and it is likely that Landulf served as a replacement. Landulf married Yvantia on an unknown date.
Landulf IV was the prince of Capua and Benevento from 968, when he was associated with his father, Pandulf Ironhead, and prince of Salerno associated with his father from 977 or 978. In 968, his uncle Landulf III died, which lead to his rise, as Pandulf ignored the rights of Landulf II's son Pandulf II, his nephew, and instead associated his own son with the government.
Alberic I was the Lombard Duke of Spoleto from between 896 and 900 until 920, 922, or thereabouts. He was also Margrave of Camerino, and the son-in-law of Theophylact I, Count of Tusculum, the most powerful man in Rome.
Gregory IV was the firstborn son of Duke Sergius II of Naples and successor of his paternal uncle, Bishop Athanasius, in 898, when he was elected dux, or magister militum, unanimously by the aristocracy. His other paternal uncle, Stephen, succeeded Athanasius as bishop. According to the Chronicon ducum et principum Beneventi, Salerni, et Capuae et ducum Neapolis, he reigned for sixteen years and eight months.
Athanasius was the Bishop and Duke of Naples from 878 to his death. He was the son of Gregory III and brother of Sergius II, whom he blinded and deposed in order to seize the throne while he was already bishop.
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.
The Principality of Capua was a Lombard state centred on Capua in Southern Italy. Towards the end of the 10th century the Principality reached its apogee, occupying most of the Terra di Lavoro area. It was originally a gastaldate, then a county, within the principality of Salerno.
Aloara of Capua, was a princess consort of Capua from the 960s to 981, and then co-regent of Capua jointly with her son from 982 until 992. She was said to have governed her states with great ability.
The Norman conquest of southern Italy lasted from 999 to 1139, involving many battles and independent conquerors.
Peter I was the bishop of Benevento from 887 or 894 until at least 902. His pontificate was marked by rapid political shifts, with Benevento successively under Byzantine (891–895), Spoletan (895–897) and Lombard rule. Peter was imprisoned and exiled a first time in 895. He served as the regent and de facto ruler of the Principality of Benevento between 897 and 900. In 902, he was proclaimed prince by the people but refused the office and went into exile a second time. He died in 914, possibly still in exile. He was buried in Benevento