AD 20 (XX) was a leap year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcus Valerius Messalla Barbatus and Cotta. The denomination 20 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The Senate was the governing and advisory assembly of the aristocracy in the ancient Roman Republic. It was not an elected body, but one whose members were appointed by the consuls, and later by the censors, which were appointed by the aristocratic Centuriate Assembly. After a Roman magistrate served his term in office, it usually was followed with automatic appointment to the Senate. According to the Greek historian Polybius, the principal source on the Constitution of the Roman Republic, the Roman Senate was the predominant branch of government. Polybius noted that it was the consuls who led the armies and the civil government in Rome, and it was the Roman assemblies which had the ultimate authority over elections, legislation, and criminal trials. However, since the Senate controlled money, administration, and the details of foreign policy, it had the most control over day-to-day life. The power and authority of the Senate derived from precedent, the high caliber and prestige of the senators, and the Senate's unbroken lineage, which dated back to the founding of the Republic in 509 BC. It developed from the Senate of the Roman Kingdom, and became the Senate of the Roman Empire.
Gnaeus Calpurnius Piso, was a Roman statesman during the reigns of Augustus and Tiberius. He served as consul in 7 BC, after which he was appointed governor of Hispania and consul of Africa. Piso is best known for being accused of poisoning and killing Germanicus, the heir of emperor Tiberius.
The senatus consultum ultimum is the modern term given to resolutions of the Roman Senate lending its moral support for magistrates to use the full extent of their powers and ignore the laws to safeguard the state.
Gnaeus Egnatius was a Roman senator who gave his name to the Via Egnatia.
The gens Calpurnia was a plebeian family at ancient Rome, which first appears in history during the third century BC. The first of the gens to obtain the consulship was Gaius Calpurnius Piso in 180 BC, but from this time their consulships were very frequent, and the family of the Pisones became one of the most illustrious in the Roman state. Two important pieces of Republican legislation, the lex Calpurnia of 149 BC and lex Acilia Calpurnia of 67 BC were passed by members of the gens.
Marcus Vinicius was twice Roman consul and, as husband of Julia Livilla, grandson-in-law (progener) of the emperor Tiberius. He was the son and grandson of two consuls, Publius Vinicius and Marcus Vinicius.
The lex Calpurnia de repetundis was a Roman law sponsored in 149 BC by the tribune of the plebs Lucius Calpurnius Piso. It established the first permanent criminal court in Roman history, in order to deal with the growing number of crimes committed by Roman governors in the provinces. The lex Calpurnia was a milestone in both Roman law and politics.
Gaius Ateius Capito was a Roman jurist in the time of emperors Augustus and Tiberius. He was consul suffectus in the year 5 from July to December as the colleague of Gaius Vibius Postumus.
The Roman Senate was the highest and constituting assembly of ancient Rome and its aristocracy. With different powers throughout its existence it lasted from the first days of the city of Rome as the Senate of the Roman Kingdom, to the Senate of the Roman Republic and Senate of the Roman Empire and eventually the Byzantine Senate of the Eastern Roman Empire, existing well into the post-classical era and Middle Ages.
The Senate of the Roman Empire was a political institution in the ancient Roman Empire. After the fall of the Roman Republic, the constitutional balance of power shifted from the Roman Senate to the Roman Emperor. Beginning with the first emperor, Augustus, the Emperor and the Senate were technically two co-equal branches of government. In practice, however, the actual authority of the imperial Senate was negligible, as the Emperor held the true power of the state. As such, membership in the senate became sought after by individuals seeking prestige and social standing, rather than actual authority. During the reigns of the first Emperors, legislative, judicial, and electoral powers were all transferred from the "Roman assemblies" to the Senate. However, since the control that the Emperor held over the senate was absolute, the Senate acted as a vehicle through which the Emperor exercised his autocratic powers.
Quintus Marcius Philippus, also Quintus Marcius L. f. Q. n. Philippus, was a Roman consul in 186 BC and again in 169 BC.
Lucius Calpurnius Piso Frugi was a Roman politician and historian. He created the first permanent jury court in Rome to try cases related to provincial corruption during his plebeian tribunate in 146 BC. He also fought, not entirely successfully, in the First Servile War. He was consul in 133 BC and censor in 120 BC.
Munatia Plancina was a Roman noblewoman who lived during the reigns of Augustus and Tiberius. She was the wife of the governor of Syria, Gnaeus Calpurnius Piso. The couple was accused of poisoning Germanicus, the nephew and adopted son of the Emperor Tiberius. At first, Munatia Plancina was acquitted, but when the trial was renewed she committed suicide.
The gens Annia was a plebeian family at ancient Rome. Livy mentions a Lucius Annius, praetor of the Roman colony of Setia, in 340 BC, and other Annii are mentioned at Rome during this period. Members of this gens held various positions of authority from the time of the Second Punic War, and Titus Annius Luscus attained the consulship in 153 BC. In the second century AD, the Annii gained the Empire itself; Marcus Aurelius was descended from this family.
The gens Appuleia, occasionally written Apuleia, was a plebeian family at ancient Rome, which flourished from the fifth century BC into imperial times. The first of the gens to achieve importance was Lucius Appuleius, tribune of the plebs in 391 BC.
The gens Domitia was a plebeian family at ancient Rome. The first of the gens to achieve prominence was Gnaeus Domitius Calvinus, consul in 332 BC. His son, Gnaeus Domitius Calvinus Maximus, was consul in 283, and the first plebeian censor. The family produced several distinguished generals, and towards the end of the Republic, the Domitii were looked upon as one of the most illustrious gentes.
Lucius Nonius Asprenas was a Roman senator who flourished during the early 1st century AD. He held the office of suffect consul in AD 29 as the colleague of Aulus Plautius. He was the oldest son of the Lucius Nonius Asprenas and Calpurnia, the daughter of Lucius Calpurnius Piso Caesoninus, consul in 15 BC. Asprenas the Younger had two brothers, Publius Nonius Asprenas Calpurnius Serranus, ordinary consul in AD 38, and Nonius Asprenas Calpurnius Torquatus.
The gens Pupia was a plebeian family at ancient Rome. Members of this gens are mentioned as early as 409 BC, when Publius Pupius was one of the first plebeian quaestors, but over the course of centuries they achieved little of significance, and rarely held any of the higher offices of the Roman state.
Gnaeus Octavius was a Roman politician and general who served as consul in 165 BC and was the builder of the Porticus Octavia.
