# Joannes

> Roman usurper (423–425) against Valentinian III

**Wikidata**: [Q309847](https://www.wikidata.org/wiki/Q309847)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Joannes)  
**Source**: https://4ort.xyz/entity/joannes

## Summary
Joannes was a Roman usurper who briefly claimed power in 423–425 against Emperor Valentinian III. His short-lived rebellion marked a period of political instability in the Western Roman Empire.

## Biography
- Born: 400 (approximate)
- Nationality: Roman
- Known for: Leading a failed usurpation against Valentinian III
- Occupation: Politician
- Instance of: Human

## Contributions
Joannes led a rebellion against Emperor Valentinian III in 423–425, attempting to seize power in the Western Roman Empire. His campaign was ultimately unsuccessful, and he died in 425.

## FAQs
**What was Joannes's role in Roman history?**
Joannes was a Roman usurper who attempted to overthrow Emperor Valentinian III in 423–425. His rebellion was short-lived and ended in defeat.

**Where did Joannes's rebellion take place?**
Joannes's rebellion occurred in the Western Roman Empire, specifically targeting the imperial authority of Valentinian III.

**When did Joannes die?**
Joannes died in 425, marking the end of his failed usurpation.

## Why They Matter
Joannes's rebellion highlighted the political instability and power struggles within the Western Roman Empire during the 5th century. His brief claim to power underscores the fragility of imperial authority in a period marked by internal conflicts and external pressures.

## Notable For
- Led a failed usurpation against Valentinian III (423–425)
- Died in 425, marking the end of his rebellion

## Body
### Early Life
Joannes was born in approximately 400, though exact details of his early life are not documented. His political career emerged during a turbulent period in Roman history.

### Political Career
In 423, Joannes declared himself emperor, challenging the rule of Valentinian III. His rebellion was part of broader instability in the Western Roman Empire, which was facing internal and external threats. Joannes's campaign was ultimately unsuccessful, and he died in 425.

### Legacy
Joannes's brief usurpation remains a notable event in Roman history, reflecting the power struggles and political instability of the 5th century. His rebellion, though short-lived, contributed to the broader narrative of imperial decline and the shifting dynamics of authority in the Western Roman Empire.

## References

1. Freebase Data Dumps. 2013