The gens Didia, or Deidia, as the name is spelled on coins, was a

plebeian In ancient Rome, the plebeians or plebs were the general body of free Roman citizens who were not patricians, as determined by the census, or in other words "commoners". Both classes were hereditary. Etymology The precise origins of the gro ...

family at

ancient Rome In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...

, which first appears in history during the final century of the

Republic A republic, based on the Latin phrase ''res publica'' ('public affair' or 'people's affair'), is a State (polity), state in which Power (social and political), political power rests with the public (people), typically through their Representat ...

. According to

Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, orator, writer and Academic skeptic, who tried to uphold optimate principles during the political crises tha ...

, they were . Titus Didius obtained the

consulship The consuls were the highest elected public officials of the Roman Republic ( to 27 BC). Romans considered the consulship the second-highest level of the ''cursus honorum''an ascending sequence of public offices to which politicians aspire ...

in 98 BC, a dignity shared by no other Didii until imperial times.''Dictionary of Greek and Roman Biography and Mythology'', vol. I, p. 1004 (" Didia Gens").

Origin

The nomen ''Didius'' or ''Deidius'' is of uncertain origin. It resembles a class of gentilicia formed from

cognomina A ''cognomen'' (; : ''cognomina''; from ''co-'' "together with" and ''(g)nomen'' "name") was the third name of a citizen of ancient Rome, under Roman naming conventions. Initially, it was a nickname, but lost that purpose when it became hereditar ...

ending in ''-idus'', but might be derived from a cognomen ''Dida''. Chase classifies it among those gentilicia that either originated at Rome, or cannot be shown to have come from anywhere else.

Anthony Birley Anthony Richard Birley (8 October 1937 – 19 December 2020) was a British ancient historian, archaeologist and academic. He was one of the leaders of excavations at of the Roman fortress at Vindolanda and also published several books on Roman ...

suggests they came from eastern Italy, "specifically from the coastal town of Histonium." Olli Salomies has documented several examples of ''Diidiis'' used as a family name amongst the Oscans.

Praenomina

The earlier Didii used the

praenomina The praenomen (; plural: praenomina) was a first name chosen by the parents of a Ancient Rome, Roman child. It was first bestowed on the ''dies lustricus'' (day of lustration), the eighth day after the birth of a girl, or the ninth day after the ...

'' Sextus'', ''

Titus Titus Caesar Vespasianus ( ; 30 December 39 – 13 September AD 81) was Roman emperor from 79 to 81. A member of the Flavian dynasty, Titus succeeded his father Vespasian upon his death, becoming the first Roman emperor ever to succeed h ...

'', and ''

Gaius Gaius, sometimes spelled Caius, was a common Latin praenomen; see Gaius (praenomen). People * Gaius (biblical figure) (1st century AD) *Gaius (jurist) (), Roman jurist * Gaius Acilius * Gaius Antonius * Gaius Antonius Hybrida * Gaius Asinius Gal ...

'', to which later members of the family added ''

Quintus Quintus is a male given name derived from ''Quintus (praenomen), Quintus'', a common Latin language, Latin forename (''praenomen'') found in the culture of ancient Rome. Quintus derives from Latin word ''quintus'', meaning "fifth". Quintus is ...

'', '' Aulus'', and ''

Lucius Lucius is a masculine given name derived from Lucius (Latin ; ), abbreviated L., one of the small group of common Latin forenames () found in the culture of ancient Rome. Lucius probably derives from Latin word ( gen. ), meaning "light" (<

''. All of these were common throughout Roman history.

Branches and cognomina

None of the Didii mentioned during the Republic is known to have borne a cognomen. A number of surnames are found under the Empire, of which the only one that appears to be a family name is ''Gallus''. This cognomen, referring to a cockerel, belongs to an abundant class of cognomina derived from the names of everyday objects and animals. The same surname could also refer to a

Gaul Gaul () was a region of Western Europe first clearly described by the Roman people, Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. It covered an area of . Ac ...

, indicating someone of Gaulish descent, or whose appearance or character resembled that of a Gaul.

Members

* Sextus Didius, the grandfather of Titus Didius, the consul of 98 BC. * Titus Didius Sex. f.,

tribune of the plebs Tribune of the plebs, tribune of the people or plebeian tribune () was the first office of the Roman Republic, Roman state that was open to the plebs, plebeians, and was, throughout the history of the Republic, the most important check on the pow ...

in 143 BC, was probably the author of the

sumptuary law Sumptuary laws (from Latin ) are laws that regulate consumption. '' Black's Law Dictionary'' defines them as "Laws made for the purpose of restraining luxury or extravagance, particularly against inordinate expenditures for apparel, food, furnitu ...

, ''lex Didia'', which was binding on all of Italy, in contrast with the ''lex Fannia'' of 161, which had no power except in the city of Rome. He is probably the same Titus Didius who was sent as

praetor ''Praetor'' ( , ), also ''pretor'', was the title granted by the government of ancient Rome to a man acting in one of two official capacities: (i) the commander of an army, and (ii) as an elected ''magistratus'' (magistrate), assigned to disch ...

against the revolted slaves in

Sicily Sicily (Italian language, Italian and ), officially the Sicilian Region (), is an island in the central Mediterranean Sea, south of the Italian Peninsula in continental Europe and is one of the 20 regions of Italy, regions of Italy. With 4. ...

, about 138. * Gaius Didius C. f., a senator in 129 BC. * Titus Didius T. f. Sex. n., as praetor in 100 BC, triumphed over the

Scordisci The Scordisci (; ) were an Iron Age cultural group who emerged after the Celtic settlement of Southeast Europe, and who were centered in the territory of present-day Serbia, at the confluence of the Savus (Sava), Dravus (Drava), Margus (Morav ...

;

consul Consul (abbrev. ''cos.''; Latin plural ''consules'') was the title of one of the two chief magistrates of the Roman Republic, and subsequently also an important title under the Roman Empire. The title was used in other European city-states thro ...

in 98, he and his colleague passed the ''

lex Caecilia Didia The ''lex Caecilia Didia'' was a law put into effect by the consuls Q. Caecilius Metellus Nepos and Titus Didius in the year 98 BC. This law had two provisions. The first was a minimum period between proposing a Roman law and voting on it, and th ...

''. Afterwards

proconsul A proconsul was an official of ancient Rome who acted on behalf of a Roman consul, consul. A proconsul was typically a former consul. The term is also used in recent history for officials with delegated authority. In the Roman Republic, military ...

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

, he triumphed over the

Celtiberians The Celtiberians were a group of Celts and Celticized peoples inhabiting an area in the central-northeastern Iberian Peninsula during the final centuries BC. They were explicitly mentioned as being Celts by several classic authors (e.g. Strabo) ...

. Didius fell during the Social War, in the spring of 89. * Titus Didius (T. f. T. n.), in 113 or 112 BC, and tribune of the plebs in 95. He and his colleague, Lucius Aurelius Cotta, were forced from the tribunal hearing the disputes arising from the accusation brought against Caepio. * Gaius Didius,

legate Legate may refer to: People * Bartholomew Legate (1575–1611), English martyr * Julie Anne Legate (born 1972), Canadian linguistics professor * William LeGate (born 1994), American entrepreneur Political and religious offices *Legatus, a hig ...

Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war. He ...

in 46 BC. In command of Caesar's fleet during Caesar's 46 BC Spanish campaign. He won a naval victory over

Publius Attius Varus Publius Attius Varus (died 17 March 45 BC) was the Roman governor of Africa during the civil war between Julius Caesar and Pompey. He declared against Caesar, and initially fought Gaius Scribonius Curio, who was sent against him in 49 BC. Poli ...

. After the

Battle of Munda The Battle of Munda (17 March 45 BC), in southern Hispania Ulterior, was the final battle of Caesar's civil war against the leaders of the Optimates. With the military victory at Munda and the deaths of Titus Labienus and Gnaeus Pompeius (eld ...

Didius pursued Gnaeus Pompeius's fleet escaping from Carteia, capturing or destroying his ships. After the death of Gnaeus, Didius was attacked and slain by his quarry's

Lusitania Lusitania (; ) was an ancient Iberian Roman province encompassing most of modern-day Portugal (south of the Douro River) and a large portion of western Spain (the present Extremadura and Province of Salamanca). Romans named the region after th ...

n soldiers. *

Quintus Didius Quintus Didius was a Roman governor of the province Syria (31 BC to 29 BC). Octavian, the later Emperor Augustus, won the decisive Battle of Actium against Mark Antony and Cleopatra VII. Then – at the end of 31 BC – he sent Didius as governor ...

, governor of

Syria Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...

in 31 BC. Although probably appointed by

Marcus Antonius Marcus Antonius (14 January 1 August 30 BC), commonly known in English as Mark Antony, was a Roman politician and general who played a critical role in the transformation of the Roman Republic from a constitutional republic into the ...

, he went over to

Octavian Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in ...

after the

Battle of Actium The Battle of Actium was a naval battle fought between Octavian's maritime fleet, led by Marcus Agrippa, and the combined fleets of both Mark Antony and Cleopatra. The battle took place on 2 September 31 BC in the Ionian Sea, near the former R ...

, and persuaded the Arabs to burn a fleet that Antonius had built in the

Red Sea The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...

. * Aulus Didius Postumus, proconsul of Cyprus during the reign of Augustus. *

Aulus Didius Gallus Aulus Didius Gallus was a member of the Roman Senate and general active during the 1st century AD. He held a number of offices and imperial appointments, the most important of which were governor of Britain between 52 and 57 AD, proconsul of ...

consul ''suffectus'' in AD 39, and subsequently governor of

Britain Britain most often refers to: * Great Britain, a large island comprising the countries of England, Scotland and Wales * The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising Great Britain and the north-eas ...

. * Didius Scaeva, one of the generals of

Vitellius Aulus Vitellius ( ; ; 24 September 1520 December 69) was Roman emperor for eight months, from 19 April to 20 December AD 69. Vitellius became emperor following the quick succession of the previous emperors Galba and Otho, in a year of civil wa ...

, who was slain at the taking of the Capitol in AD 69. * Aulus Didius Gallus Fabricius Veiento, praetor during the reign of

Nero Nero Claudius Caesar Augustus Germanicus ( ; born Lucius Domitius Ahenobarbus; 15 December AD 37 – 9 June AD 68) was a Roman emperor and the final emperor of the Julio-Claudian dynasty, reigning from AD 54 until his ...

, he was banished for publishing a number of libels, and for supposedly selling the honours granted by the emperor. He subsequently returned to Rome, and was consul at least twice, the second time under

in AD 80.

Aurelius Victor Sextus Aurelius Victor ( 320 – 390) was a historian and politician of the Roman Empire. Victor was the author of a now-lost monumental history of imperial Rome covering the period from Augustus to Constantius II. Under the emperor Julian (361 ...

reports that he was a favourite of

Domitian Domitian ( ; ; 24 October 51 – 18 September 96) was Roman emperor from 81 to 96. The son of Vespasian and the younger brother of Titus, his two predecessors on the throne, he was the last member of the Flavian dynasty. Described as "a r ...

, under whom he was consul. * Gaius Pomponius Gallus Didius Rufus, proconsul of

Crete and Cyrenaica Crete and Cyrenaica (, ) was a senatorial province of the Roman Republic and later the Roman Empire, established in 67 BC, which included the island of Crete and the region of Cyrenaica in modern-day Libya. These areas were settled by Greek colon ...

in 88/89. * Titus Didius Secundus, consul ''suffectus'' under

Trajan Trajan ( ; born Marcus Ulpius Traianus, 18 September 53) was a Roman emperor from AD 98 to 117, remembered as the second of the Five Good Emperors of the Nerva–Antonine dynasty. He was a philanthropic ruler and a successful soldier ...

in AD 102.. * Lucius Didius Marinus, the second husband of

Annia Cornificia Faustina Minor Annia Cornificia Faustina Minor (''Minor'' Latin for ''the younger'', 160–212 AD) was a daughter of the Roman emperor Marcus Aurelius and his wife, Faustina the Younger. She was sister to Lucilla and Commodus. Her maternal grandparents were A ...

, daughter of the

emperor The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...

Marcus Aurelius Marcus Aurelius Antoninus ( ; ; 26 April 121 – 17 March 180) was Roman emperor from 161 to 180 and a Stoicism, Stoic philosopher. He was a member of the Nerva–Antonine dynasty, the last of the rulers later known as the Five Good Emperors ...

. * Quintus Petronius Didius Q. f. Severus, father of the emperor Didius Julianus. * Marcus Didius Q. f. Q. n. Severus Julianus, consul in AD 175 and 179, and Roman emperor for nine weeks in AD 193. * Didius Q. f. Q. n. Proculus, brother of the emperor Didius Julianus. * Didius Q. f. Q. n. Nummius Albinus, brother of the emperor Didius Julianus. * Didia M. f. Q. n. Clara, daughter and only child of

Didius Julianus Marcus Didius Julianus (; 29 January 133 – 2 June 193) was Roman emperor from March to June 193, during the Year of the Five Emperors. Julianus had a promising political career, governing several provinces, including Dalmatia (Roman province) ...

References

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Marcus Tullius Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, orator, writer and Academic skeptic, who tried to uphold optimate principles during the political crises tha ...

, ''De Domo Sua'', ''

De Oratore ''De Oratore'' (''On the Orator'') is a dialogue written by Cicero in 55 BC. It is set in 91 BC, when Lucius Licinius Crassus dies, just before the Social War and the civil war between Marius and Sulla, during which Marcus Antonius, the oth ...

'', ''In Pisonem'', ''

Philippicae The ''Philippics'' () are a series of 14 speeches composed by Cicero in 44 and 43 BC, condemning Mark Antony. Cicero likened these speeches to those of Demosthenes against Philip II of Macedon; both Demosthenes' and Cicero's speeches became ...

'', ''Pro Murena'', ''Pro Plancio'', ''Pro Sestio''. *

Gaius Julius Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war. He ...

, ''De Bello Hispaniensis'' (On the War in Spain, attributed). * Publius Ovidius Naso (

Ovid Publius Ovidius Naso (; 20 March 43 BC – AD 17/18), known in English as Ovid ( ), was a Augustan literature (ancient Rome), Roman poet who lived during the reign of Augustus. He was a younger contemporary of Virgil and Horace, with whom he i ...

), ''

Fasti In ancient Rome, the ''fasti'' (Latin plural) were chronological or calendar-based lists, or other diachronic records or plans of official and religiously sanctioned events. After Rome's decline, the word ''fasti'' continued to be used for simi ...

''. *

Marcus Velleius Paterculus Marcus Velleius Paterculus (; ) was a Roman historian, soldier and senator. His Roman history, written in a highly rhetorical style, covered the period from the end of the Trojan War to AD 30, but is most useful for the period from the death o ...

, ''Compendium of Roman History''. * Lucius Annaeus Florus, ''Epitome de T. Livio Bellorum Omnium Annorum DCC'' (Epitome of Livy: All the Wars of Seven Hundred Years). * Appianus Alexandrinus (

Appian Appian of Alexandria (; ; ; ) was a Greek historian with Roman citizenship who prospered during the reigns of the Roman Emperors Trajan, Hadrian, and Antoninus Pius. He was born c. 95 in Alexandria. After holding the senior offices in the pr ...

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Aulus Gellius Aulus Gellius (c. 125after 180 AD) was a Roman author and grammarian, who was probably born and certainly brought up in Rome. He was educated in Athens, after which he returned to Rome. He is famous for his ''Attic Nights'', a commonplace book, ...

, ''Noctes Atticae'' (Attic Nights). * Lucius Cassius Dio Cocceianus (

Cassius Dio Lucius Cassius Dio (), also known as Dio Cassius ( ), was a Roman historian and senator of maternal Greek origin. He published 80 volumes of the history of ancient Rome, beginning with the arrival of Aeneas in Italy. The volumes documented the ...

), ''Roman History''. *

Eusebius of Caesarea Eusebius of Caesarea (30 May AD 339), also known as Eusebius Pamphilius, was a historian of Christianity, exegete, and Christian polemicist from the Roman province of Syria Palaestina. In about AD 314 he became the bishop of Caesarea Maritima. ...

, '' Chronicon''. *

Ammianus Marcellinus Ammianus Marcellinus, occasionally anglicized as Ammian ( Greek: Αμμιανός Μαρκελλίνος; born , died 400), was a Greek and Roman soldier and historian who wrote the penultimate major historical account surviving from antiquit ...

, ''Res Gestae''. *

Ambrosius Theodosius Macrobius Macrobius Ambrosius Theodosius, usually referred to as Macrobius (fl. AD 400), was a Roman provincial who lived during the early fifth century, during late antiquity, the period of time corresponding to the Later Roman Empire, and when Latin was ...

, ''Saturnalia''. * Scholia Bobiensia (

Bobbio Scholiast The Bobbio Scholiast (commonly abbreviated ''schol. Bob.'') was an anonymous scholiast working in the 7th century at the monastery of Bobbio and known for his annotations of texts from classical antiquity. He is a unique source for some information ...

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Dictionary of Greek and Roman Biography and Mythology The ''Dictionary of Greek and Roman Biography and Mythology'' is a biographical dictionary of classical antiquity, edited by William Smith (lexicographer), William Smith and originally published in London by John Taylor (English publisher), Tayl ...

'',

William Smith William, Willie, Will, Bill, or Billy Smith may refer to: Academics * William Smith (Master of Clare College, Cambridge) (1556–1615), English academic * William Smith (antiquary) (c. 1653–1735), English antiquary and historian of University C ...

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Michael Crawford Michael Patrick Smith (born 19 January 1942), known professionally as Michael Crawford, is an English actor, comedian and singer. Crawford is best known for playing the hapless Frank Spencer in the sitcom '' Some Mothers Do 'Ave 'Em'', Cornel ...

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Classical Quarterly The Classical Association (CA) is an educational organisation which aims to promote and widen access to the study of classical subjects in the United Kingdom. Founded in 1903, the Classical Association supports and advances classical learning ...