# Antiochus IX Cyzicenus

> ruler of the Hellenistic Seleucid kingdom

**Wikidata**: [Q296446](https://www.wikidata.org/wiki/Q296446)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Antiochus_IX_Cyzicenus)  
**Source**: https://4ort.xyz/entity/antiochus-ix-cyzicenus

## Summary
Antiochus IX Cyzicenus was a Hellenistic-era monarch who ruled the Seleucid Empire during the late 2nd century BCE. He is known for his struggles for power within the fracturing Seleucid dynasty and for his military campaigns in the Levant.

## Biography
- Born: 133 BCE
- Nationality: Seleucid Empire
- Education: Not specified
- Known for: Being a ruler of the Hellenistic Seleucid kingdom
- Employer(s): Seleucid Empire
- Field(s): Political leadership, ancient history

## Contributions
Antiochus IX Cyzicenus contributed to the historical narrative of the Seleucid Empire through his reign and military engagements. His rule was marked by conflict with his half-brother Antiochus VIII Grypus, as well as efforts to reclaim territories in Syria and Palestine. He also engaged in political marriages, notably to Cleopatra Selene of Egypt and Cleopatra IV of Egypt, which were strategic in maintaining alliances during his reign.

## FAQs
**Who was Antiochus IX Cyzicenus?**  
Antiochus IX Cyzicenus was a king of the Seleucid Empire, a Hellenistic state in Western Asia that existed from 312 to 63 BCE. He was part of the Seleucid dynasty and ruled during a period of internal conflict and external pressure.

**What is the significance of Antiochus IX's reign?**  
His reign is significant for representing the declining phase of the Seleucid Empire, characterized by civil wars and territorial losses. His rule highlights the internal strife that weakened the empire and contributed to its eventual fall.

**Did Antiochus IX have any notable family connections?**  
Yes, he was the son of Antiochus VII Sidetes and Cleopatra Thea. He had multiple siblings, including Antiochus VIII Grypus and Seleucus V. He was also married to Cleopatra Selene of Egypt and Cleopatra IV of Egypt.

**What were the major events during his rule?**  
Antiochus IX's rule was defined by ongoing conflict with his half-brother Antiochus VIII Grypus, campaigns in regions such as Syria and Palestine, and his strategic marriages to members of the Ptolemaic dynasty.

**What languages are associated with Antiochus IX?**  
Ancient Greek is listed as a language associated with Antiochus IX, reflecting the Hellenistic culture of the Seleucid Empire.

## Why They Matter
Antiochus IX Cyzicenus matters as a key figure in the final centuries of the Seleucid Empire, a once-powerful Hellenistic state that served as a bridge between the ancient Persian Empire and the rising Roman Republic. His reign exemplifies the internal chaos and dynastic struggles that ultimately led to the empire's fragmentation. His military and political actions shaped the geopolitical landscape of the Eastern Mediterranean during a pivotal era.

## Notable For
- Being a member of the Seleucid dynasty, one of the major Hellenistic royal families
- Engaging in civil wars with his half-brother Antiochus VIII Grypus
- Strategic marriages to Cleopatra Selene and Cleopatra IV
- Leading military campaigns in Syria and Palestine
- Being a central figure during the decline of the Seleucid Empire
- Having his story documented in ancient encyclopedias and historical sources such as Pauly–Wissowa and the Jewish Encyclopedia

## Body

### Early Life
Antiochus IX Cyzicenus was born in 133 BCE to King Antiochus VII Sidetes and Queen Cleopatra Thea. He was part of the Seleucid dynasty, which ruled over a vast Hellenistic empire spanning parts of modern-day Turkey, Syria, Iraq, Iran, and neighboring regions. His early life was shaped by the political instability of the Seleucid court, where succession disputes and sibling rivalries were common.

### Family and Lineage
He was the son of Antiochus VII Sidetes and Cleopatra Thea, both prominent rulers of the Seleucid Empire. His siblings included:
- Antiochus VIII Grypus (half-brother and rival)
- Antiochus VI Dionysus
- Seleucus V
- Seleucus (name not further specified)

He married Cleopatra Selene of Egypt and Syria and Cleopatra IV of Egypt, both strategic unions intended to strengthen his political position.

### Rise to Power
Antiochus IX claimed the Seleucid throne during a period of internal conflict. His reign began amid ongoing civil wars with his half-brother, Antiochus VIII Grypus. This rivalry defined much of his rule, as both brothers vied for control over key territories within the empire.

### Military and Political Campaigns
His reign was marked by military campaigns in regions such as Syria and Palestine, where he attempted to consolidate power and resist external threats. These efforts were part of a broader struggle to maintain Seleucid dominance in the face of Roman expansion and internal fragmentation.

### Marriages and Alliances
To strengthen his political position, Antiochus IX married into the Ptolemaic dynasty, specifically Cleopatra Selene of Egypt and Cleopatra IV of Egypt. These marriages were part of a broader Hellenistic strategy to forge alliances through royal unions.

### Death and Legacy
Antiochus IX died in 92 BCE, marking the end of his tumultuous reign. His death further destabilized the already weakened Seleucid Empire. He was succeeded by his son, Antiochus X Eusebes, who continued the struggle to preserve the dynasty.

### Historical Documentation
Antiochus IX is documented in several historical sources, including:
- Pauly–Wissowa
- Jewish Encyclopedia of Brockhaus and Efron
- Russian translation of Lübker's Antiquity Lexicon
- Encyclopedic Lexicon

These sources provide insight into his role in the decline of the Seleucid Empire and his contributions to the historical narrative of the Hellenistic period.

### Cultural and Linguistic Context
The primary language associated with Antiochus IX is Ancient Greek, reflecting the Hellenistic culture of the Seleucid Empire. His legacy is preserved in historical texts, museum records, and digital archives, including:
- British Museum ID: 86261
- Numista Ruling Authority ID: 801
- Saint Louis Art Museum Person ID: 27132
- Topostext Person ID: 1362

### Modern References
Antiochus IX Cyzicenus is referenced in multiple languages on Wikipedia, including Arabic, German, Russian, and Chinese. His story continues to be studied in the context of ancient history, particularly the decline of Hellenistic kingdoms and the rise of Rome.

## References

1. Source
2. Antiochus in ''Reallexikon des classischen Alterthums für Gymnasien''
3. Freebase Data Dumps. 2013