The 'Second Triumvirate' is the name historians give to the official political alliance of
Gaius Julius Caesar Octavianus (later Augustus),
Marcus Aemilius Lepidus, and
Marcus Antonius formed on
26 November 43 BC. There were two 5-year terms, covering the period 43 BC – 33 BC.
Unlike the somewhat more famous "
First Triumvirate", the Second Triumvirate was an official (if extraconstitutional) organization, whose overwhelming power in the Roman state was given full legal sanction and whose ''
imperium maius'' outranked that of all other magistrates, including the
consuls.
History
The
Triumvirate was established by law in
43 BC as the ''Triumviri
Rei Publicae Constituendae Consulari Potestate'' ("Triumvirs for Confirming the
Republic with Consular Power", invariably abbreviated as "
III VIR RPC"). It possessed supreme political authority. The only other office which had ever been qualified "for confirming the Republic" was the
dictatorate of
Lucius Cornelius Sulla. The only limit on the powers of the Triumvirate was the five-year term set by law.
A historical oddity of the Triumvirate is that it was an effectual three-man dictatorate which included Antony, who in
44 BC had passed a ''
lex Antonia'' which had abolished the dictatorate and expunged it from the Republic's constitutions. As had been the case with both Sulla's and
Julius Caesar's dictatorates, the members of the Triumvirate saw no contradiction between holding a supraconsular office and the consulate itself simultaneously (Lepidus was consul in
42 BC, Antony in
34 BC, and Octavian in
33 BC).
Octavian, who despite his youth had extorted his way to having been named suffect consul (''consul suffectus'') for
43 BC, had been warring with Antony and Lepidus in upper
Italia when they met at Bononia (now
Bologna) in November that year and agreed to unite and seize power. In order to refill the treasury, the Triumvirs decided to resort to
proscription. As all three had been partisans of Caesar, their choices of targets were somewhat peculiar. The most notable victim,
Marcus Tullius Cicero, who had opposed Caesar and excoriated Antony in his ''
Philippics'', came as no surprise, but the proscription of Caesar's
legate Quintus Tullius Cicero (Marcus Tullius Cicero's younger brother) seems to be motivated by pure spite. Perhaps the most shocking proscription was that of Caesar's legate
Lucius Iulius Caesar, Caesar's
first cousin once removed (and Antony's uncle) and one of Caesar's closest friends.
Octavian's colleague in the consulate that year, his cousin and nephew of Caesar, Quintus Pedius, died before the proscriptions got underway. Octavian himself resigned shortly after, allowing the appointment of a second pair of suffect consuls (the original consuls for the year, Caesar's legate
Aulus Hirtius and
Gaius Vibius Pansa Caetronianus, had died fighting on the Senate's side of the first civil war to follow Caesar's death, that between the Senate and Mark Antony himself). This became a broad pattern of the Triumvirate's two terms; during the ten years of the Triumvirate (43 BC – 33 BC), there were 42 consuls in office, rather than the expected 20.
The Caesarean background of the Triumvirs made it no surprise that immediately after the conclusion of the first civil war of the post-Caesar period, they immediately set about prosecuting a second: Caesar's murderers
Marcus Junius Brutus and
Gaius Cassius Longinus had usurped control of most of the Eastern provinces, including
Macedonia,
Asia Minor, and
Syria. In
42 BC, Octavian and Antony set out to war, defeating Brutus and Cassius in two battles fought at
Philippi (both assassins committed suicide). In October
40 BC, the Triumvir agreed to divide the provinces of the Republic into spheres of influence. Octavian — who had begun calling himself "''Divi filius''" ("son of the divinity") after Caesar's deification as Divus Iulius ("the Divine Julius") and now styled himself simply "
Imperator Caesar" — took control of the West, Antony of the East, and Lepidus of Africa.
While Antony cemented his hold in the East and reformed the provincial administration (like Sulla's provincial reforms, Caesar's had been quietly ignored after his death), Octavian tightened his grip on the West and nominally oversaw a campaign against the pirate commander
Sextus Pompeius (the campaign was actually commanded by Octavian's lieutenant,
Marcus Vipsanius Agrippa), which culminated in victory in
36 BC. Agrippa had been consul in
37 BC and had secured the Triumvirate's renewal for a second five-year term.
Like the First Triumvirate, the Second Triumvirate was ultimately unstable and could not withstand internal jealousies and ambitions. Antony cordially detested Octavian and spent most of his time in the East, while Lepidus favoured Antony but felt himself obscured by both his colleagues, despite having succeeded Caesar as
Pontifex Maximus in 43. Consequently, Lepidus cooperated in Octavian's campaign against Pompeius (son of
Gnaeus Pompeius Magnus) but foolishly attempted to seize control of Octavian's victorious legions. Octavian unilaterally expelled Lepidus from the Triumvirate, but allowed him to retain his Pontificate.
Despite having married
Octavia, Octavian's sister, in
40 (Octavian married Antony's stepdaughter Scribonia in 43), Antony openly lived in
Alexandria with
Cleopatra VII of Egypt and they had children together. A master of
propaganda, Octavian turned public opinion against his colleague. When the Triumvirate's second term expired in
33 BC, Antony continued to use the title Triumvir (Octavian, opting to distance himself from Antony, did not use it). Octavian illegally gained Antony's will in July
32 BC and read it aloud. It promised large legacies to Antony's children by Cleopatra and instructed that his body be shipped to Alexandria for burial. Rome was outraged, and the Senate declared war.
Octavian's forces decisively defeated Antony's and Cleopatra's at
Actium in Greece in September
31 BC and chased them to
Egypt in
30 BC. Both Antony and Cleopatra committed suicide in Alexandria, and Octavian personally took control of Egypt and Alexandria (Egyptian chronologies consider Octavian as Cleopatra's successor as
Pharaoh). A conspiracy organised by
Lepidus's son was crushed by Octavian's ally
Gaius Maecenas. With the complete defeat of Antony and the marginalisation of Lepidus, Augustus was left sole master of the Roman world, and proceeded to establish the
Principate as the first Roman "emperor".
See also
★
Triumvirate
★
First Triumvirate