The siege of Jasna Góra took place from 18 November to 27 December 16553, during the Swedish invasion of Poland known as the Deluge. While much of the Commonwealth had submitted to King Charles X Gustav, the Pauline monastery in Częstochowa, home of the icon of the Black Madonna, refused to open its gates. Prior Augustyn Kordecki and a small garrison of monks, soldiers and nobles held out for some forty days against a Swedish force under Burchard Müller, who finally withdrew. The defence was soon seen as a sign that the country could resist, and it became one of the great symbols of Polish history.
By the autumn of 1655 the Polish-Lithuanian Commonwealth seemed to be collapsing. Swedish armies held Warsaw and Kraków, the king had fled, and magnates were changing sides. Then, on a hill above Częstochowa, a handful of monks and soldiers shut their gates and refused to surrender: the siege of Jasna Góra had begun.
The Deluge
In the summer of 1655 King Charles X Gustav of Sweden invaded the Commonwealth, already exhausted by war in the east. Much of the nobility and army capitulated, King John II Casimir took refuge in Silesia, and by October the Swedes held both Warsaw and Kraków4. Poles would remember the invasion as the Deluge.
A fortress of faith
The Pauline monastery of Jasna Góra in Częstochowa, which housed the venerated icon of the Black Madonna, had been fortified earlier in the century. Its prior, Augustyn Kordecki, prepared it for defence with a small garrison of soldiers, local nobles and the monks themselves.
Forty days of siege
On 18 November a Swedish force under General Burchard Müller, made up mostly of German mercenaries along with Polish cavalry5 in Swedish service, appeared before the monastery and demanded its surrender. Kordecki refused. For weeks the Swedes bombarded the walls and tried to negotiate, while the defenders answered with cannon fire and night sorties6. By most accounts Müller's artillery was not heavy enough to breach the fortifications3.
The Swedes withdraw
With winter setting in, his losses mounting and the countryside beginning to rise against the Swedes, Müller lifted the siege and withdrew at the end of December 1655. Within days the Confederation of Tyszowce was formed to fight for the king, John Casimir soon returned to the country, and in April 1656 at Lwów he solemnly placed the Commonwealth5 under the protection of the Virgin Mary. Commanders such as Stefan Czarniecki went on to wage the war that drove the Swedes out.
History and legend
How much the siege mattered militarily is debated: Kordecki's own account, published a few years later, may have enlarged it7, and the Swedish force was not a full field army. But its effect on morale was real, and the defence of a holy place against a Protestant invader stirred the country. Two centuries later Henryk Sienkiewicz made it a centrepiece of his novel The Deluge, whose most famous scene, Kmicic blowing up a giant Swedish cannon, is fiction5.