# Casimir IV Jagiellon

> King of Poland and Grand Duke of Lithuania

**Wikidata**: [Q53459](https://www.wikidata.org/wiki/Q53459)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Casimir_IV_Jagiellon)  
**Source**: https://4ort.xyz/entity/casimir-iv-jagiellon

## Summary
Casimir IV Jagiellon was a 15th-century monarch who served as King of Poland and Grand Duke of Lithuania. He is best known for his role in consolidating power across Eastern Europe and for commissioning *Casimir's Code*, a foundational legal document for the Grand Duchy of Lithuania.

## Biography
- **Known for:** Reigning as King of Poland and Grand Duke of Lithuania, overseeing legal reforms and territorial expansion.
- **Field(s):** Monarchy, governance, legal reform.

## Contributions
Casimir IV Jagiellon's most significant contribution was the promulgation of *Casimir's Code* in 1468, a comprehensive legal code that standardized laws in the Grand Duchy of Lithuania. This document played a crucial role in governance and legal administration during his reign.

## FAQs
**What was Casimir IV Jagiellon's role in history?**
Casimir IV Jagiellon was a key ruler of Poland and Lithuania, known for his efforts to strengthen the legal and administrative systems of the Grand Duchy of Lithuania through reforms like *Casimir's Code*.

**What awards or honors did Casimir IV Jagiellon receive?**
He was recognized with the *Golden Rose*, a prestigious papal award, and was also a member of the *Order of the Garter*, a high honor in English chivalry.

**What is *Casimir's Code*?**
*Casimir's Code* was a legal code issued in 1468 that unified and formalized laws in the Grand Duchy of Lithuania, serving as a cornerstone of its legal system.

## Why They Matter
Casimir IV Jagiellon's reign was pivotal in shaping the political and legal landscape of Eastern Europe. His legal reforms, particularly *Casimir's Code*, laid the groundwork for governance in Lithuania, influencing administrative practices for centuries. His rule also strengthened the union between Poland and Lithuania, contributing to regional stability.

## Notable For
- Serving as King of Poland and Grand Duke of Lithuania.
- Issuing *Casimir's Code* (1468), a foundational Lithuanian legal document.
- Receiving the *Golden Rose* papal award.
- Being a member of the *Order of the Garter*.

## Body
### **Reign and Governance**
Casimir IV Jagiellon ruled as King of Poland and Grand Duke of Lithuania, overseeing a period of significant legal and administrative development. His reign spanned a critical era in Eastern European history, marked by efforts to centralize authority and standardize governance.

### **Legal Reforms**
In 1468, Casimir IV promulgated *Casimir's Code*, a comprehensive legal code that systematized laws in the Grand Duchy of Lithuania. This document was instrumental in establishing a uniform legal framework, addressing civil, criminal, and administrative matters.

### **Honors and Recognition**
Casimir IV was awarded the *Golden Rose*, a distinguished papal honor, reflecting his influence and diplomatic standing. Additionally, his membership in the *Order of the Garter* underscored his international prestige and connections to European chivalric traditions.

### **Legacy**
His legal reforms, particularly *Casimir's Code*, had a lasting impact on Lithuanian governance, shaping administrative practices well beyond his reign. His rule also reinforced the political ties between Poland and Lithuania, contributing to the stability and cohesion of the region.

## References

1. Integrated Authority File
2. The Peerage
3. [Source](https://culture.pl/pl/miejsce/wawel-siedziba-krolow-polski)
4. [Source](https://pl.wikisource.org/wiki/Encyklopedia_staropolska/R%C3%B3%C5%BCa_z%C5%82ota)
5. International Standard Name Identifier
6. Virtual International Authority File
7. Encyclopædia Britannica Online
8. Find a Grave
9. GeneaStar
10. Internetowy Polski Słownik Biograficzny
11. Freebase Data Dumps. 2013
12. [Source](http://www.regesta-imperii.de/id/1474-07-06_1_0_13_21_0_117_117)
13. CERL Thesaurus
14. [Source](https://www.treccani.it/enciclopedia/casimiro-iv-iagellone-re-di-polonia)
15. Treccani's Enciclopedia on line
16. Enciclopedia Treccani
17. Dizionario di Storia
18. [Source](https://encyklopedia.pwn.pl/haslo/Kazimierz-IV-Jagiellonczyk;3921454.html)
19. Sejm-Wielki.pl
20. Bibliography of the History of the Czech Lands
21. HMML Authority File