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Antony marries Octavia as a public dynastic seal of the 40 BCE peace

In 40 BCE Antony married Octavia, sister of Octavian, as a public seal of the Brundisium peace. In the causal graph this event strengthens Social Cohesion, a driver that strengthens Having a say in government — an improving welfare path.

Read the full account

In 40 BCE Antony married Octavia, sister of Octavian, as a public seal of the Brundisium peace. The dated marriage is not the later Cleopatra political-military alliance and not Actium. Mark Antony’s documented role is: He married Octavian’s sister Octavia after Brundisium. The house was a political instrument; later eastern marriage to Cleopatra is a different file. 40 Italy is not 37 Egypt. Later editors, printers, and excavators remain named where they appear. Mark Antony's documented role is: He married Octavian’s sister Octavia after Brundisium.

Context

A widow of Marcellus, two households of children, and later Athenian winters already sit in the file. A political marriage is not unique romance. Later playwrights are not this ceremony. Named others on the file: Octavia Minor, Octavian as brother-broker, and unnamed household officers share the marriage. The public setting is the file around -0040-10-15. The instrument stays Antony marries Octavia as a public dynastic seal of the 40 BCE peace. The setting of Antony marries Octavia as a public dynastic seal of the 40 BCE peace is the public file around -0040-10-15. Driver social-cohesion is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Why it matters

Complex shared dynastic deal. Welfare reading improving. The attached mechanism is A dated dynastic marriage put a public sister-hostage-and-seal into the 40 settlement. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is improving.

If a number is not in the two records named above, it is not supplied here.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Mark Antony

    Person

    Direct responsibility

    responsibility level 0.36 · verified

    He married Octavian’s sister Octavia after Brundisium. The house was a political instrument; later eastern marriage to Cleopatra is a different file.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactAntony marries Octavia as a public dynastic seal of the 40 BCE peace
    2. strengthensDriverSocial Cohesion
    3. strengthensIndicators (2)Having a say in government
    Improving path

    impact weight 0.35 · Effect from 40 BCE · verified

    A dated dynastic marriage put a public sister-hostage-and-seal into the 40 settlement.

    • Having a say in government

      via Social Cohesion

      Better

      Strengthens · Relationship strength 0.16 (weight 0.35 × strength 0.45)

      Observed

      29.8% of population aged 16-65 years · 8.13 below the normal line (2023)

      Worse than normal

      Two readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).

      20212023

      Above normal = better

    • Rule of Law Gap from the Highest Governance Score

      via Social Cohesion

      Better

      Weakens · Relationship strength 0.16 (weight 0.35 × strength 0.45)

      Observed

      43.9 Score · 43.9 above the normal line (2024)

      Worse than normal

      26 readings, 1996–2024: rose from 43 Score to 43.9 Score.

      Normal is zero · any amount = worse

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — Mark AntonyEncyclopaedia Britannica · High credibility · verified
  2. 2.Perseus — Plutarch, AntonyPerseus Digital Library / Tufts · High credibility · verified
What the sources establish

Britannica and Plutarch independently date the Octavia marriage as a 40 dynastic instrument. Official: Britannica — Mark Antony, marriage to Octavia (https://www.britannica.com/biography/Mark-Antony-Roman-triumvir (opens in a new tab); Encyclopaedia Britannica). Independent: Perseus — Plutarch, Antony and Octavia (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:2008.01.0007 (opens in a new tab); Perseus Digital Library). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Mark Antony, marriage to Octavia (https://www.britannica.com/biography/Mark-Antony-Roman-triumvir (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Perseus — Plutarch, Antony and Octavia (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:2008.01.0007 (opens in a new tab); Perseus Digital Library).

Established: 40 marriage to Octavia. Not established: that a later play is the ceremony. Established: a sourced public record of Antony marries Octavia as a public dynastic seal of the 40 BCE peace under -0040-10-15.

Confidence is stated on the impact path, not hidden in adjectives. 40 Italy is not 37 Egypt. Mixed effects of Antony marries Octavia as a public dynastic seal of the 40 BCE peace are separate paths.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

That reading is an impact-path choice, not a property stored on the Fact itself.

Shared responsibility is part of Antony marries Octavia as a public dynastic seal of the 40 BCE peace. Naming Mark Antony does not delete co-authors, institutions, or later transmitters. The lag from -0040-10-15 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorMark Antony
  2. contributed toFactAntony marries Octavia as a public dynastic seal of the 40 BCE peace
  3. strengthensDriverSocial Cohesion
  4. strengthensIndicatorHaving a say in government

Cite this page

Factrail. (2026). Antony marries Octavia as a public dynastic seal of the 40 BCE peace. Factrail. https://factrail.ai/facts/ant-octavia-marriage-40

https://factrail.ai/facts/ant-octavia-marriage-40

Accessed 16 October 2026.

By the · Method: how we source and score · Last reviewed

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