Casimir III the Great

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Casimir III the Great
Kazimierz III sarcophagus figure.jpg
Casimir's tomb effigy in Wawel
King of Poland
Coronation 25 April 1333
Predecessor Ladislaus the Short
Successor Louis I of Hungary
King of Ruthenia
Predecessor Yuri II of Galicia
Successor Louis I of Hungary
Born30 April 1310
Kowal, Duchy of Brześć Kujawski
Died5 November 1370(1370-11-05) (aged 60)
Kraków, Poland
Wawel Cathedral, Kraków
Spouse Aldona of Lithuania
Adelaide of Hesse
Christina Rokiczana
Hedwig of Sagan
Elisabeth, Duchess of Pomerania
Anna, Countess of Cilli
House Piast
Father Władysław I Łokietek
Mother Jadwiga of Kalisz
Religion Roman Catholic
Signature Pieczec Kazimierz Wielki.jpg

Casimir III the Great (Polish : Kazimierz III Wielki; 30 April 1310 – 5 November 1370) reigned as the King of Poland from 1333 to 1370. He also later became King of Ruthenia in 1340, and fought to retain the title in the Galicia-Volhynia Wars. He was the third [1] son of Ladislaus the Short and Jadwiga of Kalisz, and the last Polish king from the Piast dynasty. [2]


Casimir inherited a kingdom weakened by war and made it prosperous and wealthy. He reformed the Polish army and doubled the size of the kingdom. He reformed the judicial system and introduced a legal code, gaining the title "the Polish Justinian". [3] Casimir built extensively and founded the Jagiellonian University (back then simply called the University of Krakow), [4] the oldest Polish university and one of the oldest in the world. He also confirmed privileges and protections previously granted to Jews and encouraged them to settle in Poland in great numbers. [5]

Casimir left no sons. When he died in 1370 from an injury received while hunting, his nephew, King Louis I of Hungary, succeeded him as king of Poland in personal union with Hungary.

The Great King

Poland (red) at the end of the reign of Casimir III (1370); Silesia (yellow) had been lost, but the kingdom was expanding to the east Polska 1333 - 1370.png
Poland (red) at the end of the reign of Casimir III (1370); Silesia (yellow) had been lost, but the kingdom was expanding to the east

He was born on 30 April 1310 in Kowal, Kuyavia. [6] He had two brothers who died in infancy and three sisters: Kunegunda, Elżbieta, and Jadwiga. [6] When Casimir attained the throne in 1333, his position was in danger, as his neighbours did not recognise his title and instead called him "king of Kraków". The kingdom was depopulated and exhausted by war, and the economy was ruined. In 1335, in the Treaty of Trentschin, Casimir was forced to relinquish his claims to Silesia "in perpetuity".

Casimir took up to rebuild the country and strengthen its defense system. During his reign, nearly 30 towns were supplied with fortification walls and some 50 castles were constructed, including castles along the Trail of the Eagle's Nests. These achievements are celebrated until today, in the commonly-known ditty that translates as follows: inherited wooden towns and left them fortified with stone and brick (Kazimierz Wielki zastał Polskę drewnianą, a zostawił murowaną). [7]

He organized a meeting of kings in Kraków in 1364 at which he exhibited the wealth of the Polish kingdom. [8] Casimir is the only king in Polish history to both receive and retain the title of "Great", as Bolesław I is more commonly known as "the Brave". [9]


Casimir ensured stability and great prospects for the future of the country. He established the Corona Regni Poloniae – the Crown of the Polish Kingdom, [7] which certified the existence of the Polish lands independently from the monarch. Prior to that, the lands were only the property of the Piast dynasty.

At the Sejm in Wiślica, on 11 March 1347, Casimir introduced reforms to the Polish judicial system and sanctioned civil and criminal codes for Great and Lesser Poland, earning the title "the Polish Justinian". [3] In 1364, given the permission from pope Urban V, Casimir established the University of Kraków, the oldest Polish University. [10] It was regarded a rare distinction, since it was the second university founded in Central Europe, after the Charles University in Prague. [7]

Politics and Expansion

Casimir demonstrated competence in foreign diplomacy and managed to double the size of the kingdom. He neutralized the relations with potential enemies in the West and the North, and set on an expansion eastward. He conquered the Ruthenian kingdom of Halych and Volodymyr (a territory in the modern-day Ukraine), known in Polish history as Red Ruthenia and Volhynia. By extending the borders far south-east, the Polish kingdom gained access to the lucrative Black Sea trade. [11]


In 1355, in Buda, Casimir designated his nephew Louis I of Hungary as his successor should he produce no male heir, just as his father had with Charles I of Hungary to gain help against Bohemia. In exchange Casimir gained a favourable Hungarian attitude, needed in disputes with the hostile Teutonic Order and the Kingdom of Bohemia. At the time Casimir was 45 years old, and so producing a son did not seem unreasonable (he already had a few children). [12]

Casimir left no legal son, however, begetting five daughters instead. He tried to adopt his grandson, Casimir IV, Duke of Pomerania, in his last will. The child had been born to his eldest daughter, Elisabeth, Duchess of Pomerania, in 1351. This part of the testament was invalidated by Louis I of Hungary, however, who had traveled to Kraków quickly after Casimir died (in 1370) and bribed the nobles with future privileges. Casimir III also had a son-in-law, Louis VI of Bavaria, Margrave and Prince-elector of Brandenburg, who was considered a possible successor, but he was deemed ineligible as his wife, Casimir's daughter Cunigunde, had died in 1357 without issue. [13]

Thus King Louis I of Hungary became successor in Poland. Louis was proclaimed king upon Casimir's death in 1370, though Casimir's sister Elisabeth (Louis's mother) held much of the real power until her death in 1380. [14]

Society under the reign of Casimir

Wiec in reign of Casimir the Great Wiec Kazimierz Wielki.jpg
Wiec in reign of Casimir the Great

Casimir was facetiously named "the Peasants' King". He introduced the codes of law of Greater and Lesser Poland as an attempt to end the overwhelming superiority of the nobility. During his reign all three major classes — the nobility, priesthood, and bourgeoisie — were more or less counterbalanced, allowing Casimir to strengthen his monarchic position. He was known for siding with the weak when the law did not protect them from nobles and clergymen. He reportedly even supported a peasant whose house had been demolished by his own mistress, after she had ordered it to be pulled down because it disturbed her enjoyment of the beautiful landscape.[ citation needed ]

His popularity with the peasants helped to rebuild the country, as part of the reconstruction program was funded by a land tax paid by the lower social class. [7]

Relationship with Jews

Casimir's depiction on a seal PL Gloger-Encyklopedja staropolska ilustrowana T.3 355b.jpg
Casimir's depiction on a seal

On 9 October 1334, Casimir confirmed the privileges granted to Jews in 1264 by Bolesław V the Chaste. Under penalty of death, he prohibited the kidnapping of Jewish children for the purpose of enforced Christian baptism, and he inflicted heavy punishment for the desecration of Jewish cemeteries. While Jews had lived in Poland since before his reign, Casimir allowed them to settle in Poland in great numbers and protected them as people of the king. [15] Casimir's legendary Jewish mistress Esterka remains unconfirmed by direct historical evidence. [16]

Relationships and children

Casimir III was married four times:

Aldona of Lithuania

On 30 April or 16 October 1325, Casimir married Aldona of Lithuania. [17] She was also known as Anna, possibly a baptismal name. She was a daughter of Grand Duke Gediminas of Lithuania and Jewna. They had two children:

Aldona died on 26 May 1339. Casimir remained a widower for two years.

Adelheid of Hesse

On 29 September 1341, Casimir married his second wife, Adelaide of Hesse. She was a daughter of Henry II, Landgrave of Hesse, and Elizabeth of Meissen. They had no children. Casimir started living separately from Adelaide soon after the marriage. Their loveless marriage lasted until 1356, when he declared himself divorced. [18]

Christina Rokiczana

After Casimir "divorced" Adelaide he married his mistress Christina Rokiczana, the widow of Miklusz Rokiczani, a wealthy merchant. Her own origins are unknown. Following the death of her first husband she had entered the court of Bohemia in Prague as a lady-in-waiting. Casimir brought her with him from Prague and convinced the abbot of the Benedictine abbey of Tyniec to marry them. The marriage was held in a secret ceremony but soon became known. Queen Adelaide renounced it as bigamous and returned to Hesse. Casimir continued living with Christine despite complaints by Pope Innocent VI on behalf of Queen Adelaide. This marriage lasted until 1363–64 when Casimir again declared himself divorced. They had no children. [19]

Hedwig of Żagań

In about 1365, Casimir married his fourth wife Hedwig of Żagań. She was a daughter of Henry V of Iron, Duke of Żagań and Anna of Mazovia. They had three children:

As Adelheid was still alive (and possibly Christina as well), the marriage to Hedwig was also considered bigamous. Because of this, the legitimacy of his three young daughters was disputed. [20] Casimir managed to have Anna and Kunigunde legitimated by Pope Urban V on 5 December 1369. Jadwiga the younger was legitimated by Pope Gregory XI on 11 October 1371 (after Casimir's death). [21]

Title and style

Casimir's full title was: Casimir by the grace of God king of Poland and Rus' (Ruthenia), lord and heir of the land of Kraków, Sandomierz, Sieradz, Łęczyca, Kuyavia, Pomerania (Pomerelia) . The title in Latin was: Kazimirus, Dei gratia rex Polonie et Russie, nec non Cracovie, Sandomirie, Siradie, Lancicie, Cuiavie, et Pomeranieque Terrarum et Ducatuum Dominus et Heres. [22]


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See also

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Casimir III the Great
Born: 1310 Died: 1370
Regnal titles
Preceded by King of Poland
Succeeded by
Preceded by King of Rus'