Lucilla’s conspiracy fails in 182 and a senatorial purge follows as Dio and Herodian print it
In 182 a conspiracy associated with Lucilla failed; Commodus then executed leading senators as Dio and Herodian print. In the causal graph this event strengthens Judicial independence erosion (court capture), a driver that strengthens Rule of Law Gap from the Highest Governance Score — a worsening welfare path.
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In 182 a conspiracy associated with Lucilla failed; Commodus then executed leading senators as Dio and Herodian print. This Fact is that failed-plot-and-purge instrument. Historia Augusta colour is not used as a second tape.
Context
Palace assassination and reply-killings are a judicial-independence erosion: the household is the court. Confidence medium on names and totals, high that a 182 crisis sits in both Greek narratives.
Commodus’s documented role is bounded by other offices and collaborators named in the sources below.
Sister Lucilla, with senators, is the named plot. Failed assassination, then executions. Senatorial historians are hostile and later. The plot is still a dated palace-justice cluster, not a public independent court.
Why it matters
Confidence medium on magnitudes.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Commodus
PersonDirect responsibility
responsibility level 0.4 · verified
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactLucilla’s conspiracy fails in 182 and a senatorial purge follows as Dio and Herodian print it
- strengthensDriverJudicial independence erosion (court capture)
- strengthensIndicators (4)Rule of Law Gap from the Highest Governance Score
impact weight 0.5 · Effect from 1 January 182 · verified
Confidence medium on magnitudes.
- Worse
Strengthens · Relationship strength 0.36 (weight 0.5 × strength 0.72)
Observed
43.9 Score · 43.9 above the normal line (2024)
Worse than normal26 readings, 1996–2024: rose from 43 Score to 43.9 Score.
Normal is zero · any amount = worse
Weakens · Relationship strength 0.35 (weight 0.5 × strength 0.7)
Observed
0.55 index score (0-1) · 0.26 below the normal line (2024)
Worse than normalAbove normal = better
Weakens · Relationship strength 0.34 (weight 0.5 × strength 0.69)
Observed
0.62 score from 0 to 1 · 0.25 below the normal line (2024)
Worse than normal125 readings, 1900–2024: rose from 0.37 score from 0 to 1 to 0.62 score from 0 to 1.
Above normal = better
All indicators on this path (4)
Weakens · Relationship strength 0.15 (weight 0.5 × strength 0.3)
Observed
42.5 index score (0-100) · 7.53 below the normal line (2025)
Worse than normalAbove normal = better
Evidence
The sources behind this fact and its verification state.
- 1.Cassius Dio Book 73 (Loeb English) — CommodusLacusCurtius / University of Chicago · High credibility · verified
- 2.Britannica — CommodusEncyclopaedia Britannica · High credibility · verified
What the sources establish
Loeb Dio and Britannica independently describe the 182 plot and the senatorial killings that followed.
Established: 182 conspiracy and subsequent executions as received.
Commodus did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. Lucilla is not Cleander. Split sister-plot from chamberlain-riot.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorCommodus
- contributed toFactLucilla’s conspiracy fails in 182 and a senatorial purge follows as Dio and Herodian print it
- strengthensDriverJudicial independence erosion (court capture)
- strengthensIndicatorRule of Law Gap from the Highest Governance Score
Cite this page
Factrail. (2026). Lucilla’s conspiracy fails in 182 and a senatorial purge follows as Dio and Herodian print it. Factrail. https://factrail.ai/facts/com-lucilla-conspiracy-182
https://factrail.ai/facts/com-lucilla-conspiracy-182
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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