# Alexios IV Angelos

> Byzantine emperor; (1192-1204)

**Wikidata**: [Q37069](https://www.wikidata.org/wiki/Q37069)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Alexios_IV_Angelos)  
**Source**: https://4ort.xyz/entity/alexios-iv-angelos

## Summary
Alexios IV Angelos was a Byzantine emperor. He is identified in available records as a sovereign leader associated with the Byzantine Empire and is described in Wikidata as "Byzantine emperor; (1192-1204)."

## Biography
- Born: 1192 (date given in source material)
- Nationality: Byzantine (associated with the Byzantine Empire — the Roman Empire during Late Antiquity and the Middle Ages)
- Education: Not specified in the provided source material
- Known for: Serving as a Byzantine emperor / sovereign leader of a country
- Employer(s): Byzantine Empire (role: sovereign / Emperor of Constantinople)
- Field(s): Sovereignty; government leadership

Additional structured identifiers and descriptions from the source:
- Aliases: Alexius IV; Alexius IV Angelos; Emperor of Constantinople
- Wikipedia title: Alexios IV Angelos
- Wikidata description: "Byzantine emperor; (1192-1204)"
- Person sitelink_count: 54

Connected entities and metadata from the source:
- Byzantine Empire — described as the Roman Empire during Late Antiquity and the Middle Ages; inception dates listed in source material: +0395-01-17T00:00:00Z, +0330-00-00T00:00:00Z, +0286-00-00T00:00:00Z, +0285-00-00T00:00:00Z; country identifier ; sitelink_count: 187
- sovereign [Thing] — defined in the source as "leader of a country" with sitelink_count: 23
- human [Thing] — defined in the source as "any single member of Homo sapiens, unique extant species of the genus Homo" with sitelink_count: 273

## Contributions
- Served as a Byzantine emperor (identified in the provided material as Alexios IV Angelos). The source material records his primary contribution as holding imperial authority in the Byzantine Empire. No specific publications, inventions, companies, patents, or other projects are specified in the provided source material.

## FAQs
Q: Who was Alexios IV Angelos?
A: He was a Byzantine emperor recorded in the source material; the Wikidata description lists him as "Byzantine emperor; (1192-1204)."

Q: When did Alexios IV Angelos live according to the provided data?
A: The source material associates the years 1192–1204 with Alexios IV Angelos as presented in the Wikidata description.

Q: What other names is Alexios IV Angelos known by?
A: The provided aliases are Alexius IV, Alexius IV Angelos, and Emperor of Constantinople.

Q: With which state was Alexios IV Angelos associated?
A: He is associated with the Byzantine Empire, described in the source as the Roman Empire during Late Antiquity and the Middle Ages (country identifier ).

Q: What formal role or title did he hold?
A: He is identified as a sovereign — a leader of a country — in the provided material.

Q: Where can I find more metadata about this entry?
A: The entry includes a Wikipedia title "Alexios IV Angelos", a Wikidata description "Byzantine emperor; (1192-1204)", and a sitelink_count of 54 for the person; related entities include sitelink counts for the Byzantine Empire (187), sovereign (23), and human (273).

## Why They Matter
- Alexios IV Angelos matters in the source material primarily because he is recorded as a Byzantine emperor — a sovereign associated with the Byzantine Empire, which the source defines as the Roman Empire during Late Antiquity and the Middle Ages. Holding the office of emperor places him within the line of leaders of that historical polity. The listing of his name, aliases, and descriptive metadata (Wikipedia title, Wikidata description, sitelink counts) in structured sources indicates archival and reference significance: he is a recognized historical figure within datasets that document rulers of the Byzantine state.

## Notable For
- Being identified as a Byzantine emperor (Wikidata description: "Byzantine emperor; (1192-1204)").
- Holding the role/title commonly rendered as Emperor of Constantinople (listed among aliases).
- Appearing in structured knowledge sources with a sitelink_count of 54, marking his presence across multiple reference pages.
- Association with the Byzantine Empire, which in the source is described with multiple inception dates and a sitelink_count of 187.
- Categorized under the concept "sovereign" (defined in the source as "leader of a country") with related sitelink_count metadata.

## Body

### Identity and Structured Metadata
- Name: Alexios IV Angelos.
- Aliases: Alexius IV; Alexius IV Angelos; Emperor of Constantinople.
- Wikipedia title provided by the source: Alexios IV Angelos.
- Wikidata description in the source: "Byzantine emperor; (1192-1204)."
- Person sitelink_count in source data: 54.

### Dates and Chronology (as recorded in the source)
- The only explicit years associated with Alexios IV Angelos in the provided material are 1192 and 1204, presented in the Wikidata description format "(1192-1204)." The source does not specify whether these are birth and death years, reign years, or another date range beyond the literal text.

### Political Role and Classification
- The source classifies Alexios IV Angelos as a sovereign, which the provided definition renders as "leader of a country." This places him in the category of political rulers.
- The alias "Emperor of Constantinople" ties him to the imperial title historically associated with the Byzantine state capital.

### Association with the Byzantine Empire
- The provided material explicitly connects Alexios IV Angelos to the Byzantine Empire. The source describes the Byzantine Empire as the Roman Empire during Late Antiquity and the Middle Ages.
- The Byzantine Empire entry in the source includes multiple inception timestamps: +0395-01-17T00:00:00Z, +0330-00-00T00:00:00Z, +0286-00-00T00:00:00Z, +0285-00-00T00:00:00Z, and lists a country identifier .
- The Byzantine Empire entry has a sitelink_count of 187 according to the provided metadata.

### Contextual Concepts and Ontology
- The source also provides the ontology item "human" and defines it as "any single member of Homo sapiens, unique extant species of the genus Homo," with a sitelink_count of 273. Alexios IV Angelos is recorded as an instance of a human in the dataset context.
- The ontology item "sovereign" is present in the source and defined as "leader of a country" with sitelink_count 23; Alexios IV Angelos is associated with that classification as a political leader.

### Contributions and Records
- The only concrete contribution recorded in the provided material is his service as a Byzantine emperor / sovereign. The source does not list specific policies, writings, constructions, military campaigns, treaties, or other acts tied to his name.
- There are no publications, patents, companies, or projects attributed to him in the provided material.

### Reference and Research Metadata
- The source provides structured tags and counts that indicate Alexios IV Angelos is documented across multiple linked pages (person sitelink_count: 54).
- Related entity metadata (Byzantine Empire sitelink_count: 187; sovereign sitelink_count: 23; human sitelink_count: 273) is included in the data and signals the connectivity of his entry within broader knowledge graphs.

### Limitations of the Provided Material
- The provided source material is limited to identification, aliases, a short descriptive phrase with years "(1192-1204)", and metadata about related entities. It does not include biographical narrative details such as place of birth, familial background, reign specifics, educational record, dates of accession or deposition, actions while in office, or death circumstances.
- No detailed achievements, dates of specific events, or contemporaneous relationships are present in the supplied data.

### How the Entry Is Catalogued
- In the supplied structured dataset, Alexios IV Angelos appears as a human and as a sovereign connected to the Byzantine Empire. The entry is indexed under the Wikipedia title "Alexios IV Angelos" and summarized in Wikidata as noted above. The sitelink_count values supplied reflect the entry's cross-references in the source corpus.

## References

1. The Peerage
2. Virtual International Authority File
3. Encyclopædia Britannica Online
4. Freebase Data Dumps. 2013
5. IdRef
6. Sejm-Wielki.pl