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 Greco-Roman mythology, Aeneas ( , ; from ) was a Troy, Trojan hero, the son of the Trojan prince Anchises and the Greek goddess Aphrodite (equivalent to the Roman Venus (mythology), Venus). His father was a first cousin of King Priam of Troy ...
in Italy. The volumes documented the subsequent
founding of Rome
The founding of Rome was a prehistoric event or process later greatly embellished by Roman historians and poets. Archaeological evidence indicates that Rome developed from the gradual union of several hillfort, hilltop villages during the Prehi ...
(753 BC), the
formation of the Republic (509 BC), and the
creation of the Empire (27 BC) up until 229 AD, during the reign of
Severus Alexander
Marcus Aurelius Severus Alexander (1 October 208 – March 235), also known as Alexander Severus, was Roman emperor from 222 until 235. He was the last emperor from the Severan dynasty. Alexander took power in 222, when he succeeded his slain c ...
. Written in
Koine Greek
Koine Greek (, ), also variously known as Hellenistic Greek, common Attic, the Alexandrian dialect, Biblical Greek, Septuagint Greek or New Testament Greek, was the koiné language, common supra-regional form of Greek language, Greek spoken and ...
over 22 years, Dio's work covers approximately 1,000 years of history.
Many of his books have survived intact, alongside summaries edited by later authors such as
Xiphilinus, a Byzantine monk of the 11th century, and
Zonaras, a Byzantine chronicler of the 12th century.
Biography
Lucius Cassius Dio was the son of
Cassius Apronianus, a
Roman senator
The Roman Senate () was the highest and Roman constitution, constituting assembly of ancient Rome and its aristocracy. With different powers throughout its existence it lasted from the first days of the Rome, city of Rome (traditionally founded ...
and member of the
Cassia gens, who was born and raised at
Nicaea
Nicaea (also spelled Nicæa or Nicea, ; ), also known as Nikaia (, Attic: , Koine: ), was an ancient Greek city in the north-western Anatolian region of Bithynia. It was the site of the First and Second Councils of Nicaea (the first and seve ...
in
Bithynia
Bithynia (; ) was an ancient region, kingdom and Roman province in the northwest of Asia Minor (present-day Turkey), adjoining the Sea of Marmara, the Bosporus, and the Black Sea. It bordered Mysia to the southwest, Paphlagonia to the northeast a ...
.
Byzantine
The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman E ...
tradition maintains that Dio's mother was the daughter or sister of the Greek orator and philosopher,
Dio Chrysostom; however, this relationship has been disputed. Although Dio was a
Roman citizen
Citizenship in ancient Rome () was a privileged political and legal status afforded to free individuals with respect to laws, property, and governance. Citizenship in ancient Rome was complex and based upon many different laws, traditions, and cu ...
, he wrote in Greek. Dio always maintained a love for his hometown of Nicaea, calling it "my home", as opposed to his description of his villa in
Capua
Capua ( ; ) is a city and ''comune'' in the province of Caserta, in the region of Campania, southern Italy, located on the northeastern edge of the Campanian plain.
History Ancient era
The name of Capua comes from the Etruscan ''Capeva''. The ...
, Italy ("the place where I spend my time whenever I am in Italy").
For the greater part of his life, Dio was a member of the
public service
A public service or service of general (economic) interest is any service intended to address the needs of aggregate members of a community, whether provided directly by a public sector agency, via public financing available to private busin ...
. He was a senator under
Commodus
Commodus (; ; 31 August 161 – 31 December 192) was Roman emperor from 177 to 192, first serving as nominal co-emperor under his father Marcus Aurelius and then ruling alone from 180. Commodus's sole reign is commonly thought to mark the end o ...
and governor of
Smyrna
Smyrna ( ; , or ) was an Ancient Greece, Ancient Greek city located at a strategic point on the Aegean Sea, Aegean coast of Anatolia, Turkey. Due to its advantageous port conditions, its ease of defence, and its good inland connections, Smyrna ...
following the death of
Septimius Severus
Lucius Septimius Severus (; ; 11 April 145 – 4 February 211) was Roman emperor from 193 to 211. He was born in Leptis Magna (present-day Al-Khums, Libya) in the Roman province of Africa. As a young man he advanced through cursus honorum, the ...
; he became a
suffect consul
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 approximately the year 205. Dio was also
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 ...
in
Africa
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...
and
Pannonia
Pannonia (, ) was a Roman province, province of the Roman Empire bounded on the north and east by the Danube, on the west by Noricum and upper Roman Italy, Italy, and on the southward by Dalmatia (Roman province), Dalmatia and upper Moesia. It ...
.
Severus Alexander
Marcus Aurelius Severus Alexander (1 October 208 – March 235), also known as Alexander Severus, was Roman emperor from 222 until 235. He was the last emperor from the Severan dynasty. Alexander took power in 222, when he succeeded his slain c ...
held Dio in the highest esteem and reappointed him to the position of consul in 229. Following his second consulship, while in his later years, Dio returned to his native Bithynia, where he eventually died.
Dio was either the grandfather or great-grandfather of
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 ...
, consul in 291.
''Roman History''
Dio published a ''Roman History'' (, ''Rhōmaïkḕ Historía'') in 80 books in
Greek
Greek may refer to:
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group
*Greek language, a branch of the Indo-European language family
**Proto-Greek language, the assumed last common ancestor of all kno ...
, later translated into Latin as the . On the matter of its composition, he writes the following: "I spent ten years in collecting all the achievements of the Romans from the beginning down to the death of
Severus 11 AD and twelve years more in composing my work. As for subsequent events, they also shall be recorded, down to whatever point it shall be permitted me".
The books cover a period of approximately 1,400 years, beginning with the tales from
Roman mythology
Roman mythology is the body of myths of ancient Rome as represented in the literature and visual arts of the Romans, and is a form of Roman folklore. "Roman mythology" may also refer to the modern study of these representations, and to th ...
of the arrival of the legendary
Aeneas
In Greco-Roman mythology, Aeneas ( , ; from ) was a Troy, Trojan hero, the son of the Trojan prince Anchises and the Greek goddess Aphrodite (equivalent to the Roman Venus (mythology), Venus). His father was a first cousin of King Priam of Troy ...
in Italy () and the founding of Rome by his descendant
Romulus
Romulus (, ) was the legendary founder and first king of Rome. Various traditions attribute the establishment of many of Rome's oldest legal, political, religious, and social institutions to Romulus and his contemporaries. Although many of th ...
(753 BC); as well as the historic events of the
republican and
imperial eras through 229 AD. The work is one of only three written Roman sources that document the
British revolt of 60–61 AD led by
Boudica
Boudica or Boudicca (, from Brittonic languages, Brythonic * 'victory, win' + * 'having' suffix, i.e. 'Victorious Woman', known in Latin chronicles as Boadicea or Boudicea, and in Welsh language, Welsh as , ) was a queen of the Iceni, ancient ...
. Until the first century BC, Dio provides only a summary of events; after that period, his accounts become more detailed.
Dio's work has often been deprecated as unreliable and lacking any overall political aim. Recently, however, some scholars have re-evaluated his work and have highlighted his complexity and sophisticated political and historical interpretations.
Survey of surviving books and fragments
The first 21 books have been partially reconstructed based on fragments from other works, as well as the 12th-century
epitome
An epitome (; , from ἐπιτέμνειν ''epitemnein'' meaning "to cut short") is a summary or miniature form, or an instance that represents a larger reality, also used as a synonym for embodiment. Epitomacy represents "to the degree of." A ...
of
Joannes Zonaras who used Dio's ''Roman History'' as a main source. Scholarship on this part of Dio's work is scarce but the importance of the
Early Republic and
Regal period to Dio's overall work has recently been underlined.
Books 22 through 35, which are only sparsely covered by fragments, were already lost by the times of Zonaras.
''Roman History'', Introduction
Loeb Classical Library
The Loeb Classical Library (LCL; named after James Loeb; , ) is a monographic series of books originally published by Heinemann and since 1934 by Harvard University Press. It has bilingual editions of ancient Greek and Latin literature, ...
.
The books that follow, Books 36 through 54, are all nearly complete; they cover the period from 65 BC to 12 BC, or from the eastern campaign of Pompey
Gnaeus Pompeius Magnus (; 29 September 106 BC – 28 September 48 BC), known in English as Pompey ( ) or Pompey the Great, was a Roman general and statesman who was prominent in the last decades of the Roman Republic. ...
and the death of Mithridates
Mithridates or Mithradates (Old Persian 𐎷𐎡𐎰𐎼𐎭𐎠𐎫 ''Miθradāta'') is the Hellenistic period, Hellenistic form of an Iranian languages, Iranian theophoric name, meaning "given by Mithra". Its Modern Persian form is Mehrdad. It ...
to the death of Marcus Vipsanius Agrippa
Marcus Vipsanius Agrippa (; BC – 12 BC) was a Roman general, statesman and architect who was a close friend, son-in-law and lieutenant to the Roman emperor Augustus. Agrippa is well known for his important military victories, notably the B ...
. Book 55 contains a considerable gap, while Books 56 through 60 (which cover the period from 9–54 AD) are complete and contain events from the defeat of Varus in Germany to the death of Claudius
Tiberius Claudius Caesar Augustus Germanicus ( ; ; 1 August 10 BC – 13 October AD 54), or Claudius, was a Roman emperor, ruling from AD 41 to 54. A member of the Julio-Claudian dynasty, Claudius was born to Nero Claudius Drusus, Drusus and Ant ...
.
Of the 20 subsequent books in the series, there remain only fragments and the meager abridgement of John Xiphilinus, a Byzantine monk from the 11th century sponsored by emperor Michael VII Doukas
Michael VII Doukas or Ducas (), nicknamed Parapinakes (, , a reference to the devaluation of the Byzantine currency under his rule), was the senior Byzantine emperor from 1071 to 1078. He was known as incompetent as an emperor and reliant on ...
. The abridgment of Xiphilinus, as now extant, commences with Book 35 and continues to the end of Book 80. The last book covers the period from 222 to 229 AD (the first half of the reign of Alexander Severus
Marcus Aurelius Severus Alexander (1 October 208 – March 235), also known as Alexander Severus, was Roman emperor from 222 until 235. He was the last emperor from the Severan dynasty. Alexander took power in 222, when he succeeded his slain co ...
).
Collections of book fragments
The fragments of the first 36 books have been collected in four ways:
;''Fragmenta Valesiana'': Fragments that were dispersed throughout various writers, scholiasts, grammarians, and lexicographers, and were collected by Henri Valois
;''Fragmenta Peiresciana'': Large extracts, found in the section entitled "Of Virtues and Vices", contained in the collection, or portative library, compiled by order of Constantine VII
Constantine VII Porphyrogenitus (; 17 May 905 – 9 November 959) was the fourth Byzantine emperor of the Macedonian dynasty, reigning from 6 June 913 to 9 November 959. He was the son of Emperor Leo VI and his fourth wife, Zoe Karbonopsina, an ...
Porphyrogenitus. The manuscript of this belonged to Nicolas-Claude Fabri de Peiresc.
;''Fragmenta Ursiniana'': The fragments of the first 34 books, preserved in the second section of the same work by Constantine, entitled "Of Embassies". These are known under the name of ''Fragmenta Ursiniana'', as the manuscript in which they are contained was found 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. ...
by Fulvio Orsini
Fulvio Orsini (11 December 1529 – 18 May 1600) was an Italian humanist, historian, and archaeologist. He was a descendant of the Orsini family, one of the oldest, most illustrious, and for centuries most powerful of the Roman princely families ...
.
;''Excerpta Vaticana'': '' Excerpta Vaticana'' by Angelo Mai
Angelo Mai (''Latin'' Angelus Maius; 7 March 17828 September 1854) was an Italian Cardinal and philologist. He won a European reputation for publishing for the first time a series of previously unknown ancient texts. These he was able to discov ...
contains fragments of Books 1 to 35 and 61 to 80. Additionally, fragments of an unknown continuator
A continuator, in literature, is a writer who creates a new work based on someone else's prior text, such as a novel or novel fragment. The new work may complete the older work (as with the numerous continuations of Jane Austen's unfinished novel ...
of Dio (''Anonymus post Dionem''), generally identified with the 6th century CE historian Peter the Patrician, are included; these date from the time of Constantine. Other fragments from Dio that are primarily associated with the first 34 books were found by Mai in two Vatican manuscripts; these contain a collection that was compiled by Maximus Planudes
Maximus Planudes (, ''Máximos Planoúdēs''; ) was a Byzantine Greek monk, scholar, anthologist, translator, mathematician, grammarian and theologian at Constantinople. Through his translations from Latin into Greek and from Greek into Latin, ...
. The annals of Joannes Zonaras also contain numerous extracts from Dio.
Content
An outline of ''Roman History''.
Books of ''Roman History''
See also
* Herodian
Herodian or Herodianus () of Syria, sometimes referred to as "Herodian of Antioch" (c. 170 – c. 240), was a minor Roman civil servant who wrote a colourful history in Greek titled ''History of the Empire from the Death of Marcus'' (τῆς με ...
* Roman historiography
During the Second Punic War with Carthage, Rome's earliest known annalists Quintus Fabius Pictor and Lucius Cincius Alimentus recorded history in Greek, and relied on Greek historians such as Timaeus. Roman histories were not written in Classi ...
* Severan dynasty
The Severan dynasty, sometimes called the Septimian dynasty, ruled the Roman Empire between 193 and 235.
It was founded by the emperor Septimius Severus () and Julia Domna, his wife, when Septimius emerged victorious from civil war of 193 - 197, ...
* Tacitus
Publius Cornelius Tacitus, known simply as Tacitus ( , ; – ), was a Roman historian and politician. Tacitus is widely regarded as one of the greatest Roman historians by modern scholars.
Tacitus’ two major historical works, ''Annals'' ( ...
Notes
References
Further reading
*
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*
External links
*
*
Greek text of Dio's ''Roman History''
at the Perseus Digital Library
The Perseus Digital Library, formerly known as the Perseus Project, is a free-access digital library founded by Gregory Crane in 1987 and hosted by the Department of Classical Studies of Tufts University. One of the pioneers of digital libraries, ...
(Earnest Cary & Herbert Baldwin Foster, Loeb Classical Library
The Loeb Classical Library (LCL; named after James Loeb; , ) is a monographic series of books originally published by Heinemann and since 1934 by Harvard University Press. It has bilingual editions of ancient Greek and Latin literature, ...
, 1914–1927)
Greek text of Dio's ''Roman History''
at Poesia Latina (1914–1927 edition)
*
on LacusCurtius
LacusCurtius is the ancient Graeco-Roman part of a large history website, hosted as of March 2025 on a server at the University of Chicago. Starting in 1995, as of January 2004 it gave "access to more than 594 photos, 559 drawings and engravings, ...
(1914–1927 edition)
Greek text with French Translation
( Étienne Gros and V. Boissée, 1845–1870)
Dio Cassius: the Manuscripts of "The Roman History"
at the Tertullian Project
* Editio princeps
In Textual scholarship, textual and classical scholarship, the ''editio princeps'' (plural: ''editiones principes'') of a work is the first printed edition of the work, that previously had existed only in manuscripts. These had to be copied by han ...
ΤΩΝ ΔΙΩΝΟΣ ΡΩΜΑΪΚΩΝ ΙΣΤΟΡΙΩΝ ΕΙΚΟΣΙΤΡΙΑ ΒΙΒΛΙΑ: Dionis Romanarum historiarum libri XXIII, à XXXVI ad LVIII vsque
, Greek text edited by Robert Estienne
Robert I Estienne (; 15037 September 1559), known as ''Robertus Stephanus'' in Latin and sometimes referred to as ''Robert Stephens'', was a 16th-century printer in Paris. He was the proprietor of the Estienne print shop after the death of his f ...
, Paris, 1548
Held
by the Corning Museum of Glass
The Corning Museum of Glass is a museum in Corning (city), New York, Corning, New York, United States, dedicated to the art, history, and science of glass. It was founded in 1951 by Corning Incorporated, Corning Glass Works and currently has a ...
.
Editio princeps of Xiphilinus's Epitome (Robert Estienne, Paris, 1551)
at Google Books
{{Authority control
150s births
230s deaths
2nd-century Greek writers
2nd-century Romans
3rd-century Greek writers
3rd-century historians
3rd-century Romans
Dio
Greek-language historians from the Roman Empire
Historians from Roman Anatolia
Imperial Roman consuls
People from Nicaea
Roman governors of Africa
Year of birth uncertain
Year of death uncertain
2nd-century historians