Boleslaus IV of Masovia
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Boleslaus IV of Masovia
Boles?aw IV of Warsaw, 15th century

Boles?aw IV of Warsaw (Polish: Boles?aw IV warszawski; c. 1421 - 10 September 1454), was a Polish prince and member of the House of Piast in the Masovian branch. He was Duke of Warsaw during 1429-1454 (under regency until 1436) and sovereign Duke of Podlachia in 1440-1444.

He was the second son of Boles?aw Januszowic (in turn second son of Janusz I of Warsaw) and Anna Feodorovna of Ratnie, a Lithuanian princess and granddaughter of Algirdas.

Life

The successive deaths of his older uncle, father and brother between 1422-1427 left Boles?aw IV as the only surviving male heir of Janusz I, who in order to protect his rights, in 1428 forced his local nobility to paid homage to the seven-year old prince as his future ruler; thanks to this, when the Duke died one year later (8 December 1429), Boles?aw IV could assumed the power without much difficulties; however, because he was a minor at that moment, his mother Anna took the regency on his behalf until 1436, when he attained his majority and began his personal rule.

In foreign policy, Boles?aw IV initially tried to stay neutral in the conflicts between the Teutonic Order and the Kingdom of Poland (and his ally the Grand Duchy of Lithuania), but soon he was forced to choose a side in 1431, at the outbreak of the Polish-Teutonic War. Boles?aw IV then decided to send auxiliary troops to the Polish King. The Peace of Brze Kujawski, signed on 31 December 1435, guaranteed the inviolability of Boles?aw IV's domains.[1]

In subsequent years, Boles?aw IV was involved in the political intrigues at the Kingdom of Poland, moreover, closely related with the Polish-Lithuanian union. Boles?aw IV strongly supported to the party led by the Bishop of Kraków, Zbigniew Ole?nicki. The Duke of Warsaw's adherence to the Bishop of Kraków was noted in his participation in the Confederation of Nowy Korczyn in April 1438. He refused to send troops to the Hussite confederates led by Spytek of Melsztyn at the Battle of Grotniki.

Two years later, another conflict drew the attention of Boles?aw IV. On 20 March 1440, Sigismund K?stutaitis, Grand Duke of Lithuania, was killed. The Polish King W?adys?aw III acted quickly and named his younger brother Casimir as the regent of the Grand Duchy in his name. However, the Lithuanians had other plans, and when Casimir arrived to Vilnius, they proclaimed Sovereign Grand Duke and not regent. The Polish, in opposition declared their support to another candidate to the throne, Michael ?ygimantaitis, Sigismund's son. Michael was briefly married with Boles?aw IV's sister Euphemia in 1435-1436, and after his father's murder he was forced to seek refuge at the court of his brother-in-law in 1440.

Boles?aw IV wanted to take advantage of this situation and shortly after he captured the district of Podlachia. The Lithuanians threatened Boleslaw with war, because the previous agreement between King W?adys?aw II and Janusz I only granted the land during the latter's lifetime.

In 1444 began the Lithuanian-Masovian War for the possession of Podlachia; following Casimir's orders, the voivode Jonas Go?tautas captured Mielnik and Drohiczyn. At this point the Polish decided to aid Boles?aw IV and announced that they soon send their troops; however, at the same time, they sent representatives to negotiate an agreement with the Lithuanians. Thanks to this, the feared Polih-Lithuanian War didn't occur. Only in 1446 Boles?aw IV decided to waive for good his claims over Podlachia and W?grów in exchange for a compensation of 6,000 silver marks.[2]

Soon a complete change in the political situation erupted. The death of King W?adys?aw III in the Battle of Varna on 10 November 1444 reopened the disputes over the Polish throne succession. The closest male relative and heir apparent was the Grand Duke Casimir of Lithuania, but the local magnates refused to renew the union between both countries. Zbigniew Ole?nicki, after a prolonged interregnum, decided to choose another candidate who would take the empty throne only if Casimir made a definitive renounce. The deadline for the decision of Casimir was supposed to be on 26 June 1446. Previously, on 30 March the Crown Council was reunited and considered two main candidates: Frederick II, Elector of Brandenburg (supported by the Polish Episcopate) and Boles?aw IV. Finally, in another meeting at Piotrków Trybunalski they formally supported the Duke of Warsaw's candidacy: the decisive argument for this was that he belonged to the old Piast dynasty. However, the election could be definitive only after Casimir made his formal renunciation. Despite this, Boles?aw IV decided to support the rights of Casimir, in order to neutralize the danger that suppose the election of Frederick II of Brandenburg as King. Casimir finally decided to take the throne, and on 25 June 1447 he was crowned King of Poland at Kraków. Boles?aw IV, fully reconciled with the new King, took part in the ceremony and also paid homage to him.

In 1453, Boles?aw IV suddenly reassumed his pretensions over Podlachia. However, he soon waived his claims, this time for good, after a meeting with the King at Parczew, where in exchange of his renunciation he recovered the district of Drohiczyn.

In domestic politics Boles?aw IV continued the line of his grandfather Janusz I, taking care of the local legislation under the Kulm law. In order to increase his applicability, he ordered the translation of the codes from German to Polish.

Boles?aw IV died on 10 September 1454 at his estate of Opinogóra Górna. He was buried in St. John's Archcathedral, Warsaw.

Marriage and issue

Between 1440/45, Boles?aw IV married Barbara (ca. 1428 - 25 July between 1488/92), a Lithuanian princess, daughter of Alexander Vladimirovich,[3] Duke of Slutsk-Kapyl and Grand Prince of Kiev (also named Olelko; in turn he was a son of Vladimir Olgerdovich, a son of Algirdas). They had ten children:

  • Boles?aw (1445 - before 1453)
  • Janusz (c. 1446 - before 1454)
  • Konrad III the Red (c. 1447/48 - 28 October 1503)
  • Boles?aw (c. 1448 - before 1452)
  • Casimir III (10 June 1448/8 June 1449 - 9 June 1480)
  • Janusz (c. 1450/53 - c. 1454/55)
  • Anna (c. 1450/53 - 19 November 1477/14 September 1480), married c. 1465 Przemys?aw II, Duke of Cieszyn
  • Sophia (c. 1452/54 - after 10 September 1454)
  • Boles?aw V (c. 1453 - 27 April 1488)
  • Janusz II (posthumously, c. 1455 - 16 February 1495)

Notes

  1. ^ Codex diplomaticus Regni Poloniae et Magni Ducatus Lituaniae, by Maciej Dodgiel, vol. 4, Vilnius 1764, p. 132.
  2. ^ Henryk ?owmia?ski: Polityka Jagiellonów, Pozna? 1999, p. 164.
  3. ^ Jan T?gowski: Anna i Barbara - ksine mazowieckie z XV wieku. Przyczynek do genealogii Piastów mazowieckich, [in:] J. ?liwi?ski (ed.), Spo?ecze?stwo i polityka do XVII wieku, Olsztyn 1994, pp. 97-104; Kazimierz Jasi?ski: Rodowód Piastów mazowieckich, Pozna? - Wroc?aw 1998, p. 159.

References


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