# Leo IV the Khazar

> Byzantine emperor

**Wikidata**: [Q41645](https://www.wikidata.org/wiki/Q41645)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Leo_IV_the_Khazar)  
**Source**: https://4ort.xyz/entity/leo-iv-the-khazar

## Summary
Leo IV the Khazar was a Byzantine emperor who served as ruler of the Byzantine Empire during the 8th century. He is identified as a human and a member of the unique extant species of the genus Homo. His epithet "the Khazar" distinguishes him within the lineage of Byzantine rulers.

## Biography
- **Born:** January 25, 750
- **Died:** September 8, 780
- **Nationality:** Byzantine Empire
- **Occupation:** Ruler (Byzantine Emperor)
- **Instance of:** Human (Homo sapiens)

## Contributions
Leo IV the Khazar served as the ruler of the Byzantine Empire, the Roman Empire during Late Antiquity and the Middle Ages. His reign is documented through various historical identifiers and numismatic records, including a coin depicting Leo IV alongside Constantine VI (Leo iv constantine vi coin.jpg). He held the position of emperor within the geopolitical context of the Byzantine Empire, which had inception dates in 285, 286, 330, and 395 AD.

## FAQs
**What was Leo IV the Khazar's role in history?**
Leo IV the Khazar was a Byzantine emperor and ruler who reigned over the Byzantine Empire during the 8th century.

**When was Leo IV the Khazar born and when did he die?**
He was born on January 25, 750, and died on September 8, 780.

**What is the significance of his title "the Khazar"?**
The title "the Khazar" is part of his historical name, Λέων Δ' ο Χάζαρος, distinguishing him as a specific ruler within the Byzantine Empire's history.

**Which empire did Leo IV the Khazar rule?**
He ruled the Byzantine Empire, which is defined as the Roman Empire during Late Antiquity and the Middle Ages.

## Why They Matter
Leo IV the Khazar matters as a historical figure who held the supreme leadership role of ruler in the Byzantine Empire. As an emperor reigning in the mid-8th century, he represents a specific link in the chain of sovereignty over the Roman Empire during its Middle Ages phase. His existence is recorded across numerous international knowledge bases, library archives, and biographical dictionaries, cementing his place in the historical record of human rulers. The documentation of his life, including specific birth and death dates, provides essential data for understanding the chronology of Byzantine leadership.

## Notable For
*   Serving as Byzantine emperor (ruler).
*   Being born on January 25, 750.
*   Dying on September 8, 780.
*   Being a human member of Homo sapiens.
*   Ruling the Byzantine Empire (Roman Empire during Late Antiquity and the Middle Ages).
*   Being documented under the Greek name Λέων Δ' ο Χάζαρος.
*   Being depicted on coinage alongside Constantine VI.

## Body

### Early Life and Origins
Leo IV the Khazar was born on January 25, 750. He is classified as a human, a member of the unique extant species of the genus Homo. His historical identity is deeply connected to the Byzantine Empire, the state he would eventually rule.

### Reign as Ruler
Leo IV the Khazar served as the ruler of the Byzantine Empire. The Byzantine Empire is historically defined as the Roman Empire during Late Antiquity and the Middle Ages, with inception dates recorded as +0285-00-00T00:00:00Z, +0286-00-00T00:00:00Z, +0330-00-00T00:00:00Z, and +0395-01-17T00:00:00Z. As a ruler, he held sovereignty over this region during the 8th century.

### Historical Identifiers and Records
Leo IV the Khazar is extensively cataloged in academic and knowledge sources. His Wikidata description lists him explicitly as a "Byzantine emperor." He holds the Virtual International Authority File (VIAF) ID 281645835 and the Integrated Authority File (GND) ID 100951783. Other identifiers include:
*   Freebase ID: /m/0jsmv
*   Encyclopædia Britannica Online ID: biography/Leo-IV
*   Great Russian Encyclopedia ID: 44354227
*   Store norske leksikon ID: Leo_4._-_bysantinsk_keiser
*   Proleksis Encyclopedia ID: 94084
*   Treccani ID: Leon_4.

His presence is recorded across 53 sitelinks, indicating broad documentation. He is also listed under the category "Leon IV" on Wikimedia Commons.

### Death
Leo IV the Khazar died on September 8, 780. This date marks the end of his tenure as ruler of the Byzantine Empire.

### Cultural Depictions
A notable image associated with him is "Leo iv constantine vi coin.jpg," which depicts coinage from his era featuring him and Constantine VI. His Greek name is recorded as Λέων Δ' ο Χάζαρος.

## References

1. Source
2. Find a Grave
3. Gran Enciclopèdia Catalana
4. Freebase Data Dumps. 2013
5. CERL Thesaurus
6. HMML Authority File