PLEnlist

The Siege of Jasna Góra, 1655: the monastery that defied the Deluge

Second Northern War (the Deluge) · 18 November to 27 December 1655 · Polish-Lithuanian Commonwealth vs Sweden · ~10 min read · Updated October 2026

Next anniversary: 18 November 2026, the 371st anniversary of the start 18 November in history ›

Prior Augustyn Kordecki in a white habit raises a crucifix on the walls of Jasna Góra as defenders fight off the Swedish assault in smoke, a painting by January Suchodolski in the National Museum in Kraków.

January Suchodolski, via Wikimedia Commons, public domain.

At a glance

vs
SwedenGen. Burchard Müller (Müller von der Lühnen)
Date
18 November to 27 December 1655
Location
Jasna Góra monastery, Częstochowa
Period
Swedish invasion of the Commonwealth (the Deluge), Second Northern War
Outcome
The defenders held; the Swedes lifted the siege
By the numbers
SideStrengthLosses
DefendersA few hundred: a garrison of about 160 soldiers (Polish History Museum), about 250 armed men in all (OKO.press), with musket-armed monks, local nobles and volunteers1Not reliably recorded
Besiegers (in Swedish service)About 1,600 to 2,000, largely German mercenaries and Poles in Swedish service, under Burchard Müller; older accounts claimed 9,000 to 10,0002Not reliably recorded

Strengths vary widely between sources, and much of the traditional detail comes from Kordecki's own account, printed in 1658, which historians treat with caution. No reliable casualty count survives for either side.3

Quick answer

The siege of Jasna Góra lasted from 18 November to the night of 26 to 27 December 1655, during the Swedish invasion of Poland known as the Deluge. While much of the Polish-Lithuanian Commonwealth submitted to King Charles X Gustav of Sweden, the fortified Pauline monastery at Częstochowa, home of the venerated icon of the Black Madonna, refused to open its gates. Prior Augustyn Kordecki and a few hundred defenders, monks, soldiers and local nobles, held out for about forty days against the troops of General Burchard Müller, who finally withdrew. The defense was quickly taken as a sign that the country could resist, and Kordecki's own account and Henryk Sienkiewicz's novel The Deluge turned it into one of the great legends of Polish history.4

In the autumn of 1655 the Polish-Lithuanian Commonwealth seemed to be falling apart. The king had fled the country, and magnates and nobles were swearing loyalty to the invader one after another. Then, on a hill above Częstochowa, a handful of monks and soldiers shut their gates and refused to surrender. So began the defense of Jasna Góra, an event that has to be told twice: once as the documents record it, and once as legend remembers it.5

The Deluge

In 1655 King Charles X Gustav of Sweden invaded the Commonwealth, which was already fighting Muscovy and the Cossacks in the east. Officially he was defending himself against a Polish claim to the Swedish throne. In truth, Britannica says, he wanted to check Russia's advance into Poland and tighten Sweden's grip on the Baltic. His first victories forced King John Casimir to flee the country, and many magnates and nobles who disliked their king went over to the Swedes almost without a fight.6

The new order did not bring peace. The plundering of Swedish and German mercenaries, Lutherans at that, stirred up peasants and nobles alike. The historian Adam Kersten noted that men who two months earlier had groveled before the invader were calling for war against him by the end of 1655. Częstochowa stood at the center of that turn.7

Dark locator map with a gold star in a glowing circle marking the approximate site of the Siege of Jasna Góra, the coasts, rivers and lakes of the region, and a small world map inset with the area boxed
The Siege of Jasna Góra: the star marks the approximate site, and the inset shows the area on a world map. Drawn for this article from Natural Earth data, with no modern borders. Location map: © Echoes of Battle (data: Natural Earth, public domain)
Baroque portrait of a long-haired king in armor with an ermine-lined red cloak and a baton
King Charles X Gustav of Sweden, who invaded the Commonwealth in 1655, in a portrait attributed to Justus van Egmont, painted between 1654 and 1660. Public domain

The fortress of Mary

The Pauline monastery on Jasna Góra, the Bright Mount, was not a defenseless church on a hill. The decision to fortify it was taken in 1620, during a visit by King Sigismund III Vasa. Work began in 1624, probably to designs by the Italian engineer Andrea dell'Aqua, and in 1639, under Władysław IV, the partly finished fortress received the name Fortalitium Marianum, the Fortress of Mary. By 1655 Jasna Góra had modern bastioned walls and good artillery.8

Prior Kordecki

At its head stood Augustyn Kordecki, born on 16 November 1603 at Iwanowice near Kalisz. He had joined the Paulines in 1633, taught rhetoric and theology and served as prior of several houses before Jasna Góra. In 1655 he was both the monks' superior and the fortress commander. Laymen helped him, among them Stefan Zamoyski, sword-bearer of Sieradz, and Piotr Czarniecki, elder brother of the future hetman Stefan Czarniecki.9

Painting of an old white-bearded monk with arms outstretched on the walls, another monk praying behind him
Prior Augustyn Kordecki during the defense of Częstochowa, painted by Walery Eljasz-Radzikowski in 1871. Public domain

A safe conduct and a hidden icon

This part of the story long had no place in the legend. On 7 November 1655, when a Swedish victory seemed certain, Kordecki chose to recognize Charles Gustav's authority and received in return a royal safe conduct guaranteeing the monastery's inviolability. His letter to the Swedish king survives in the archives in Stockholm. Professor Idzi Panic of the University of Silesia reads it as an obvious attempt to play for time and survive, and places the truth somewhere in the middle.10

At the same time the prior saw to what mattered most. The monks sent away their treasures, among them the miraculous icon of the Virgin, and put a copy in the chapel. According to the Polish History Museum the icon was taken to the castle at Lubliniec. OKO.press says it passed through Lubliniec to the Pauline house at Mochów, and some researchers believe it was also kept in the castle chapel at Głogówek, in Habsburg Silesia. The original was not on Jasna Góra during the siege.11

Forty days

The first troops appeared below Jasna Góra on 8 November. On 18 November, despite the safe conduct, they tried to enter the monastery, and when they were refused the siege began. They were commanded by General Burchard Müller von der Lühnen, and his army was small and Swedish largely in name. OKO.press estimates it at about 2,000 men, Wprost at about 1,600, many of them German mercenaries and Poles who had gone over to Charles Gustav. Older accounts spoke of ten thousand infantry.12

The defenders numbered a few hundred. The Polish History Museum writes of a garrison of 160 soldiers and monks armed with muskets, OKO.press of about 250 armed men, joined by local nobles and volunteers. Week after week the besiegers sent demands to surrender, and Kordecki refused them. The bombardment won them nothing, because, as the historian Ryszard Henryk Bochenek stresses, the decisive contest was an artillery duel and the monastery's guns proved better than Müller's. Near the end the besiegers even demanded payment to go away, and were refused that too.13

Copperplate engraving of the siege of Jasna Góra: the walled monastery with its tall tower on a hill, smoke rising over the town below, and in the foreground mounted officers and columns of pikemen and musketeers drawn up before it.
The siege of Jasna Góra in 1655, a small copperplate engraving by an unknown artist made between 1750 and 1850, showing the bastioned fortress on its hill and the besieging troops before it. Public domain. National Library of Poland (Polona), via Wikimedia Commons.

Inside, unity did not always hold. Wprost, citing the old sources, describes a mutiny in the garrison on 26 November that the prior ended by doubling the soldiers' pay. The last failed assault came at Christmas. On the night of 26 to 27 December 1655, after about forty days, Müller raised the siege.14

The monastery on the hill kept its gates shut while half the country swore loyalty to the invader.

Why the besiegers left

Historians point to several reasons. Jasna Góra had good fortifications and solid artillery, and its defenders were prepared. Müller had too few men and too few heavy guns, and his troops, says Idzi Panic, were second-rate, though their commander was able. The Częstochowa Museum notes that the besiegers were more tempted by the loot of the monastery treasury than eager for a fight. Add the December cold, which Wprost points to, and what OKO.press calls a propaganda defeat: the siege of a shrine by an army taken to be Protestant turned the country against the invader.15

From Częstochowa to Lwów

News of the defense spread before the siege was even over. Kersten pointed to a telling detail. A proclamation issued at Sokal on 16 December, while Jasna Góra was still besieged, spoke of the siege in the present tense. On 29 December the nobles gathered in the army at Tyszowce formed a confederation against the Swedes, and its act spoke of the siege in the past tense, as a sacrilege in which several thousand men had stormed the church of Częstochowa.16

John Casimir came home, and on 1 April 1656, in Lwów cathedral, at a Mass said by the papal nuncio Pietro Vidoni, he made his vows before the image of Our Lady of Graces, choosing the Virgin as protector and Queen of his kingdom. He also promised to ease the lot of the peasants, a promise never kept. The war that finally drove the Swedes out was led by commanders such as Stefan Czarniecki.17

Crowded history painting of a kneeling king before a bishop at an altar, surrounded by nobles and clergy
The Vows of King John Casimir by Jan Matejko, 1893: the king places the Commonwealth under the protection of the Virgin Mary in Lwów cathedral in 1656. National Museum, Wrocław. Public domain

History and legend

Much of what we know about the siege comes from one book. Kordecki wrote a memoir on which the Latin Nova Gigantomachia, the New Battle of the Giants against the holy image, was based. Kersten, working from the Jasna Góra archive, found that a fair copy existed by February 1657 and that the first copies came off the press in Kraków only in early March 1658. Wprost notes that the title page carried the date 1655, although the siege had ended only four days before that year was out. The book thus appeared when the outcome of the war was known, and OKO.press reports the suggestion that Queen Louise Marie Gonzaga encouraged it.18

For centuries this account was the picture of the defense. In it the besiegers grew to nine thousand, German mercenaries and Poles in Swedish service became Protestant Swedes, and the deliverance was credited to the miraculous icon, which was not in the monastery at all. In 1969 the historian Edward Jelonek argued that Kordecki's memoir may have been reworked by the polemicist Stefan Damalewicz, and that the changes distorted some events. Later writers added more. Wespazjan Kochowski wrote of a thick mist that hid the monastery from an assault.19

Henryk Sienkiewicz did most of all. In The Deluge, published in 1886, the siege fills several chapters of the second volume, and his hero, Andrzej Kmicic, blows up a great Swedish culverin, which breaks the besiegers' spirit. Kmicic is fictional and so is the terrible culverin. Bochenek writes that Sienkiewicz considerably distorted the real course of the artillery fight. Yet it is his version, built on Kordecki's, that shaped what generations of Poles imagined.20

Was the defense a miracle or hard work? The OKO.press article is titled "Trud, nie cud," hard work, not a miracle, and Wprost calls the legend a miraculous invention. One thing is beyond doubt: a small fortress held out at the very moment when no one seemed to be resisting, and the news moved the country before anyone had written a book about it.21

Kordecki after the siege

John Casimir wanted to make Kordecki prior of Jasna Góra for life and a bishop, but the monk refused, as he also refused the post of vicar general. He died on 20 March 1673 at Wieruszów, during a visitation, and was buried in the crypt at Jasna Góra, where his urn stands in a niche beside the chapel of the miraculous image. In May 1973, on the three hundredth anniversary of his death, Cardinal Karol Wojtyła spoke of him at Wieruszów as a man in whom humility and magnanimity, humility and heroism were woven together.22

A note on dates

The dates in this article are Gregorian. Sweden still used the Julian calendar, which in the 17th century ran ten days behind, and did not switch to the Gregorian calendar until 1753. Swedish documents therefore date the same events ten days earlier.23

Frequently asked questions

When was the siege of Jasna Góra?

From 18 November 1655, when the besiegers were refused entry, to the night of 26 to 27 December 1655, when General Müller withdrew, about forty days in all. The first troops had appeared below the monastery on 8 November.

Who defended Jasna Góra?

Prior Augustyn Kordecki with the Pauline monks, a garrison of about 160 soldiers, local nobles and volunteers, a few hundred people in all. He was helped by the nobles Stefan Zamoyski and Piotr Czarniecki, brother of the hetman Stefan Czarniecki.

Who besieged the monastery, and how many were there?

General Burchard Müller von der Lühnen, with about 1,600 to 2,000 men by modern estimates, largely German mercenaries in Swedish pay and Poles who had gone over to Charles X Gustav. Kordecki's account and older writers claimed nine or ten thousand.

Was the Black Madonna in the monastery during the siege?

No. Before the siege the monks sent the icon away, to the castle at Lubliniec and on, by some accounts, to Mochów or Głogówek in Silesia, and put a copy in the chapel.

Did Kordecki negotiate with the Swedes?

Yes. On 7 November 1655 he recognized Charles X Gustav's authority in return for a safe conduct for the monastery; his letter survives in Stockholm. Historians such as Idzi Panic read it as a way of playing for time.

Why was the defense of Jasna Góra so important?

It came when much of the Commonwealth had accepted Swedish rule and quickly became a symbol of resistance: the Tyszowce confederation of 29 December 1655 already invoked it, and in 1656 King John Casimir made his Lwów vows to the Virgin.

Did the culverin scene in Sienkiewicz's The Deluge really happen?

No. Kmicic is a fictional character, and the giant Swedish culverin he blows up is an invention of the novel, published in 1886. The historian Ryszard Henryk Bochenek writes that Sienkiewicz considerably distorted the real course of the artillery fight.

Notes

A number in the text points to a note; each note names the works that paragraph draws on, listed in full under Sources.

  1. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”. ↩
  2. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Wprost, “Cudowne zmyślenie”. ↩
  3. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Adam Kersten, Z badań nad konfederacją tyszowiecką; Wprost, “Cudowne zmyślenie”. ↩
  4. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”; Muzeum Częstochowskie, “L. Klasztor oo. Paulinów / Jasna Góra”. ↩
  5. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Muzeum Historii Polski, “Lwów Vows of King John II Casimir (1 April 1656)”; Encyclopaedia Britannica, “Charles X Gustav”. ↩
  6. Muzeum Historii Polski, “Lwów Vows of King John II Casimir (1 April 1656)”; Encyclopaedia Britannica, “Charles X Gustav”. ↩
  7. Adam Kersten, Z badań nad konfederacją tyszowiecką; Muzeum Historii Polski, “Lwów Vows of King John II Casimir (1 April 1656)”. ↩
  8. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Muzeum Częstochowskie, “L. Klasztor oo. Paulinów / Jasna Góra”. ↩
  9. dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”; Muzeum Częstochowskie, “L. Klasztor oo. Paulinów / Jasna Góra”. ↩
  10. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”. ↩
  11. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”; Muzeum Historii Polski, “Lwów Vows of King John II Casimir (1 April 1656)”. ↩
  12. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Muzeum Częstochowskie, “L. Klasztor oo. Paulinów / Jasna Góra”; Wprost, “Cudowne zmyślenie”. ↩
  13. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”. ↩
  14. Muzeum Historii Polski, “Szwedzi odstępują od oblężenia Jasnej Góry”; OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”; Wprost, “Cudowne zmyślenie”. ↩
  15. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”; Muzeum Częstochowskie, “L. Klasztor oo. Paulinów / Jasna Góra”; Wprost, “Cudowne zmyślenie”. ↩
  16. Adam Kersten, Z badań nad konfederacją tyszowiecką; Witold Kłaczewski, 330-lecie Konfederacji Tyszowieckiej. ↩
  17. Muzeum Historii Polski, “Lwów Vows of King John II Casimir (1 April 1656)”; dzieje.pl, “370. rocznica ślubów lwowskich Jana Kazimierza”. ↩
  18. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Adam Kersten, Z badań nad konfederacją tyszowiecką; Wprost, “Cudowne zmyślenie”; Augustyn Kordecki, Nova Gigantomachia contra sacram imaginem Deiparae Virginis a S. Luca depictam. ↩
  19. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Wprost, “Cudowne zmyślenie”; Edward Jelonek, Kto jest autorem „Nowej Gigantomachii”? Zniekształcony pamiętnik o. Kordeckiego. ↩
  20. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Henryk Sienkiewicz, Potop, volume 2, chapters 12 to 20; Encyclopaedia Britannica, “Henryk Sienkiewicz”. ↩
  21. OKO.press, “Obrona Jasnej Góry. Trud, nie cud”; Adam Kersten, Z badań nad konfederacją tyszowiecką; Wprost, “Cudowne zmyślenie”. ↩
  22. dzieje.pl, “Ojciec Augustyn Kordecki, obrońca Jasnej Góry”. ↩
  23. Encyclopaedia Britannica, “Gregorian calendar”. ↩

Sources

Battle honors of your homeland

The turning points of history

Marathon, Gaugamela, Cannae, Constantinople, Waterloo, Stalingrad: the days the world changed course.

Based on your country, which we do not store · why? ·

Hold the walls of Jasna Góra

Echoes of Battle brings the great battles of history to life, scene by scene on the real map. Enlist below and we will send word to your inbox the day it launches.