Julius Caesar: Conqueror, Dictator, and Assassination

Nearly two thousand years after his death, Julius Caesar still sparks debate—was he a visionary reformer or a power-hungry tyrant? This guide walks through the key moments of his life, from the conquest of Gaul to the betrayal on the Ides of March, drawing on ancient sources and modern research to separate fact from fiction.

Born: July 100 BCE ·
Died: March 15, 44 BCE (Ides of March) ·
Known for: Conquest of Gaul, crossing the Rubicon, Dictator of Rome ·
Assassinated by: Roman senators led by Brutus and Cassius ·
Romantic link: Cleopatra VII of Egypt

Seven key facts about Caesar, one pattern: his life was a series of calculated gambles that paid off—until the last one didn’t.

What was Julius Caesar best known for?

Military conquests

• Caesar conquered Gaul (modern France and Belgium) from 58 to 50 BCE, expanding Roman territory and wealth.
• He conducted the first Roman invasions of Britain in 55 and 54 BCE.
• His campaigns showcased tactical genius and ambition.

Political reforms

• As dictator, Caesar reformed the calendar, creating the Julian calendar with 365 days and leap years (World History Encyclopedia).
• He granted Roman citizenship to people in provincial towns, spreading Roman identity.
• He initiated land reforms and infrastructure projects.

Dictatorship and end of the Republic

• In 44 BCE the Senate appointed Caesar dictator perpetuo (dictator for life) (Britannica ancient Rome overview).
• His concentration of power alarmed senators who feared the death of the Republic.
• This move directly led to the conspiracy that ended his life.

Why was Caesar assassinated?

Fear of tyranny

• Many senators believed Caesar intended to make himself king, ending the Republic (Stanford Report analysis).
• His title dictator perpetuo was unprecedented and permanent.
• Rumors of a crown offered by Mark Antony fueled fears.

The conspiracy

• The plot was led by Gaius Cassius Longinus and Marcus Junius Brutus, whom Caesar had spared earlier (National Geographic history piece).
• Around 60 senators were involved, codenamed “the Liberators”.
• The conspirators chose the Ides of March for the attack, a date already packed with political meetings.

The assassination itself

• On 15 March 44 BCE, as Caesar entered the Theatre of Pompey (the Curia Pompeia) for a Senate session, the conspirators surrounded him (Wikipedia assassination article).
• He was stabbed 23 times; ancient sources report he tried to defend himself but fell.
• The assassins then marched through Rome claiming they had restored liberty (Hillsdale College course blog).

The pattern: The assassination proved that eliminating a leader does not eliminate the underlying crisis.

Did Julius Caesar marry Cleopatra?

Roman marriage law

• Roman law forbade a marriage between a Roman citizen and a foreign monarch.
• Caesar was already married to Calpurnia Pisonis.

Caesar and Cleopatra’s relationship

• Caesar and Cleopatra became allies and lovers in 48 BCE after she smuggled herself into his quarters rolled in a carpet.
• Their son Caesarion (Ptolemy XV) was born in 47 BCE.
• Caesar never recognised Caesarion as his heir in Roman law, though he acknowledged paternity privately.

Legacy of Caesarion

• After Caesar’s death, Cleopatra promoted Caesarion as the rightful heir.
• Octavian (Caesar’s adopted son) defeated Cleopatra and Caesarion, and ordered the boy killed to eliminate a rival.

The relationship with Cleopatra, though politically useful, remained legally ambiguous.

Who were Julius Caesar’s lovers?

Cleopatra of Egypt

• Their affair produced Caesarion and strengthened Caesar’s ties to the wealthy Ptolemaic kingdom.

Servilia (mother of Brutus)

• Caesar had a long-term affair with Servilia, the half-sister of Cato and mother of Brutus (EBSCO Research Starters).
• Some ancient sources claim Caesar bought Servilia a pearl worth millions.

Calpurnia (his wife)

• Calpurnia was Caesar’s last wife; she remained faithful and reportedly warned him of the assassination in a dream.

Other rumored affairs

• Caesar was known for numerous liaisons, including with the wives of political allies and enemies.
• His soldiers’ marching song called him a “bald-headed adulterer” (Suetonius).

The pattern: Caesar used personal relationships to build political alliances, but his private life also created enemies.

Did Brutus regret killing Caesar?

Shakespeare’s portrayal

• In Julius Caesar, Shakespeare shows Brutus haunted by Caesar’s ghost before the Battle of Philippi.
• The famous line “Et tu, Brute?” is a dramatic invention, not historical.

Historical accounts

• Plutarch describes Brutus as a principled man who believed the act was necessary for the Republic (Britannica on the assassination).
• After the assassination, Brutus minted coins celebrating liberty, suggesting he felt no shame.

Brutus’s final days

• Defeated by Octavian and Antony at Philippi in 42 BCE, Brutus committed suicide.
• Dio Cassius reports Brutus said before his death: “I fled from my own evil destiny, but now I shall be free.”

The implication: No direct evidence of regret exists, but later Romans debated whether Brutus was a hero or a traitor. The poetry paints guilt; the coins show pride.

The pattern: The gap between act and record leaves room for doubt.

What did Jesus say about Julius Caesar?

Chronological impossibility

• Julius Caesar died in 44 BCE; Jesus was born around 4 BCE. They never overlapped.
• No biblical or contemporary text records Jesus speaking about Julius Caesar.

The “render unto Caesar” phrase

• The famous saying “Render unto Caesar what is Caesar’s” (Mark 12:17) refers to the Roman emperor (likely Tiberius), not Julius.
• The confusion arises because “Caesar” became a title for Roman emperors long after Julius’s death.

Why this matters: This question, though rare, reveals a common conflation between the man Julius Caesar and the imperial title that outlived him. For Bible readers, the only “Caesar” Jesus mentioned was the ruling emperor, not the founder.

Timeline of Julius Caesar’s life

• 100 BCE – Julius Caesar born in Rome (Britannica biography).
• 60 BCE – Formation of First Triumvirate with Pompey and Crassus (Wikipedia).
• 58–50 BCE – Gallic Wars: Caesar conquers Gaul (World History Encyclopedia).
• 49 BCE – Crosses the Rubicon, triggers civil war (National Geographic).
• 48 BCE – Defeats Pompey at the Battle of Pharsalus (Hillsdale College).
• 46–44 BCE – Dictatorship; calendar reform; affair with Cleopatra (Stanford Classics lecture).
• 15 March 44 BCE – Assassination by Roman senators (Wikipedia).

Bottom line: Caesar compressed a lifetime of ambition into 56 years. The speed of his rise—and the abruptness of his fall—reshaped Rome permanently.

The pattern: Caesar’s rapid consolidation of power made his fall equally swift.

Clearing up what we know and what we don’t

The implication: Many details of Caesar’s life remain uncertain, but the core timeline is solid.

Voices from history

“Alea iacta est” (The die is cast).

— Julius Caesar, attributed by Suetonius, upon crossing the Rubicon

“Et tu, Brute? Then fall, Caesar.”

— William Shakespeare, The Tragedy of Julius Caesar

[The conspirators] believed the Republic would become despotic under Caesar’s rule.

— Plutarch, Life of Caesar (as summarised by Stanford Report)

Why Caesar still matters

Caesar’s story is a warning about power and republican decline (Stanford Classics lecture). His death did not save the Republic—it killed it. For any society that values checks on leadership, the lesson is clear: concentration of power, even by a genius, tends toward crisis. For history buffs, the trade-off between reform and tyranny is the puzzle they keep trying to solve.

För den som vill fördjupa sig i detaljerna kring hans liv och död rekommenderar vi Julius Caesars biografi och arv.

Frequently asked questions

Related reading

• Alexander Graham Bell – another historical figure whose legacy involves controversy and competing claims.
• Sylvia Plath – a life marked by creative genius and personal turmoil, not unlike the paradoxes of Caesar’s story.