The city of Danzig (Gdańsk) was captured by the State of the Teutonic Order on 13 November 1308, resulting in a massacre of its inhabitants and marking the beginning of tensions between Poland and the Teutonic Order. Originally the knights moved into the fortress as an ally of Poland against the Margraviate of Brandenburg. However, after disputes over the control of the city between the Order and the King of Poland arose, the knights murdered a number of citizens within the city and took it as their own. Thus the event is also known as Gdańsk massacre or Gdańsk slaughter (rzeź Gdańska). Though in the past a matter of debate among historians, a consensus has been established that many people were murdered and a considerable part of the town was destroyed in the context of the takeover.
In the aftermath of the takeover, the order seized all of Pomerelia (Gdańsk Pomerania) and bought up the supposed Brandenburgian claims to the region in the Treaty of Soldin (1309). The conflict with Poland was temporarily settled in the Treaty of Kalisz (1343). The town was returned to Poland in the Second Peace of Toruń in 1466.
Background
In the 13th century, the Pomerelian duchy was ruled by members of the Samborides, originally stewards for the Polish Piast kings and dukes. The stewards asserted their power from fortified strongholds. The major stronghold of the area was at the location of present-day Gdańsk's Old Town. The adjacent town developed from a market place of tradesmen and was granted Lübeck city rights by Duke Swietopelk II in 1224.
Under Swietopelk II, Gdańsk became an important trading site on the lower Vistula.
The Margraviate of Brandenburg entered the scene after Mestwin II, son of Swietopolk, concluded the Treaty of Arnswalde with them, in order to receive aid against his brother, Wartislaw. The margraves took over the town in 1270/1 from Wartislaw, but did not hand it over to Mestwin until the latter was able to force them out by concluding an alliance with Boleslaw Pobozny, duke of Greater Poland. Under the rule of Brandenburg, conflicts erupted between the Slavic and German populations, which cost many lives. In the 1282 Treaty of Kępno Mestwin II promised his Pomerelian duchy to his ally Przemysł II, duke and later king of Poland, who succeeded to the duchy after Mestwin's death in 1294.
The Margraves of Brandenburg also claimed the region and had Przemysł assassinated in early 1296. Władysław I the Elbow-high (Łokietek), Przemysł's successor, was only in loose control of Pomerelia and Gdańsk with the actual control of the area being in the hands of the local Swienca family who had come into power already under Mestwin II. In 1301, one year after Wenceslaus II of Bohemia had been crowned king of Poland, the princes of Rügen, who also claimed to be the heirs of Pomerelia, mounted an expedition. Wenceslaus, who with the Polish crown had also acquired the claim to Pomerelia, called the Teutonic Order for help. The Teutonic knights occupied Gdańsk, repelled the princes of Rügen, and left the town in 1302. While the Norwegian king Haakon backed Rügen's claims, his 1302 call to the Hanseatic cities for aid remained without answer.
Wenceslaus II died in 1305 and was succeeded by Wenceslaus III, murdered in 1306. In a treaty of 8 August 1305, the margraves of Brandenburg promised to Wenceslaus III the Meissen (Miśnia) territory in exchange for Pomerelia, but that treaty was never finalized. The Teutonic Order had inherited Gniew (Mewe) from Sambor II, thus gaining a foothold on the left bank of the Vistula. Brandenburg occupied the west of the duchy after neutralizing another claimant to the area, the Cammin bishop, by burning down his see.
Rebellion of 1308 and Brandenburgian siege
Meanwhile, Władysław I the Elbow-high had reestablished his power in Poland, but was occupied in the south of his realm. He appointed Bogusza as his Pomerelian governor in Gdańsk. In the summer of 1308, a rebellion was incited by the local Swienca family allied with Waldemar of Brandenburg, resulting in a Brandenburgian intervention which unseated the forces loyal to Łokietek, who later would become King of Poland. Bogusza and his men had retreated to the castle next to the town, and were besieged by the margraves.
Bogusza, on the advice of the Dominican prior Wilhelm, appealed to the Teutonic Knights in Prussia for assistance.
Teutonic takeover
The Knights, under the leadership of Heinrich von Plotzke, agreed to aid Bogusza, and a force of 100 knights and 200 supporters, led by Günther von Schwarzburg, arrived at the castle around August.
While historians agree that the castle as well as the adjacent town were in the hands of the Teutonic Knights by late November 1308, the number of casualties and the extent of destruction is debated. Peter Oliver Loew writes that for a long time German historians accepted the version of events given by Teutonic Knights, and did not accept a high number of people murdered, with the number given between 60 and 100 victims. According to Peter Oliver Loew the exact numbers can never be established, however he agrees that all available data confirms that the city was destroyed during the conquest.
Ethnicity of the town's inhabitants
According to Peter Oliver Loew, there were German as well as Slavic inhabitants of the town. Smoliński (2021) notes that the townspeople who supported the takeover of Gdańsk in 1308 were predominantly German and adds that the townspeople and proceeding victims of the massacre and their origins and backgrounds are still in dispute among scholars. According to Hartmut Boockmann, Germans constituted the majority of the town's population. According to Śliwiński & Możejko (2017), prior to the massacre, most residents had come from the Northern German city of Lübeck. Śliwiński & Możejko (2020) add that the majority of them originally hailed from Westphalia, Lower Saxony, and the Rhineland and had previously settled in Lübeck before relocating to Gdańsk, while a minority were of Slavic (Pomeranian) origin. Loew (2024) writes that the townspeople who resisted the Teutonic Order were chiefly of German descent. According to Kazimierz Jaśinski, the Knights captured the town with the help from some of the German burghers, who constituted a very small minority within the town at the time. According to Stefan Maria Kuczyński, the German population only achieved the majority after local Polish population was murdered and a new settlement was built by Teutonic Knights.
Teutonic Knights entering the town
According to Błażej Śliwiński at the time of events, Gdańsk with surrounding settlements had around 2000 to 3000 inhabitants. The forces of the order had arrived in two columns: one re-inforced the Polish garrison in the castle, the other one marched against the town from the south and raised a siege. In the castle, conflict arose between the Teutonic and Polish knights, with the latter opposing a takeover by the former. After several encounters, the outnumbered Polish forces left the castle, with some of them defecting to the rebellious inhabitants of the town and the Brandenburgers. In the evening of 12 November 1308, the Teutonic Knights succeeded in forcing their way inside the town. During the ensuing close combat in the streets, the Teutonic Knights gained the upper hand over the defending Brandenburgian forces, burghers and Pomerelian knights. The victorious knights killed many citizens and opposing knights. By the morning of 13 November, the defendants were utterly defeated, bodies were lying in the streets and executions were going on.
According to Halina Wątróbska, half of the town was promised to the Teutonic Order in return for aiding Bogusza's men. The Teutonic Knights then moved in, defeated the Brandenburgers and had the townspeople accept Łokietek as their suzerain. However, on 13 November they "took over the whole town, thereby killing everyone who defied their will."
Udo Arnold says that a dispute between the castle's garrison and the Teutonic knights arose when the Brandenburgers were about to leave. While the dispute was about the co-ordination of further action and unsettled payment, Arnold says that it was at the same time that "the order's policy changed from providing aid towards annexing Pomerelia and buying up existing legal claims," which was opposed by the population of Danzig. This was answered by the order on 13 November "by the uncompromising levelling of the greater part of the town."
Ulrich Nieß says that as a consequence of the appearance of Teutonic Order forces in the castle, the Brandenburgers left, and soon left also the initial Pomerelian and Kuyavian garrison of the castle after a dispute with the Teutonic Knights. The town, though still preferring Brandenburg rule, offered asylum to the garrison, and in relying on its Lübeck law charter refused to allow the Teutonic Knights to enter and to follow an order to lay down its fortifications. On 13 November, the order's forces with personal involvement of Plotzke forced their way into the town, though no larger battle took place. The order then held a tribunal in the town and ordered large-scale demolishments of its buildings.
Massacre records
Soon after the takeover, on 19 June 1310, the Teutonic Knights faced charges that they had committed a massacre in a bull issued by pope Clement V: "Latest news were brought to my attention, that officials and brethren of the aforementioned Teutonic order have hostilely intruded the lands of Our beloved son Wladislaw, duke of Cracow and Sandomierz, and in the town of Gdańsk killed more than ten thousand people with the sword, inflicting death on whining infants in cradles whom even the enemy of faith would have spared." The source of the allegation is unknown. The respective bull contained other charges against the Teutonic Order, resulting from a dispute between its Livonian branch and the citizens as well as the archbishop of Riga, Friedrich von Pernstein. According to Ulrich Nieß, von Pernstein was the likely the source of the allegation of the ten thousand massacred. The bull called for an investigation of the charges which was started by Francis of Moliano in 1312. During the inquisition, Moliano excommunicated the Teutonic Knights, but this was reversed in 1313. The Riga lawsuit was finally decided in the Teutonic Order's favor by Clement's successor John XXII after a hearing in Avignon in 1319.
Under Władysław Łokietek and his successor Casimir III the Great an additional two lawsuits were filed against the order at the curia, both aiming at the return of Pomerelia. The sites of investigation were Inowrocław and Brześć Kujawski in 1320/21 and Warsaw in 1339. The judges were Domarat, bishop of Poznań, Janisław, archbishop of Gniezno and, Nikolaus (Mikolaj), abbot of Mogilno in the first case and Galhard of Chartres and Peter (Pierre) of Gervais in the second case. Witness and eyewitness reports collected during these cases include mentions of killings during the takeover of Danzig, referred to e.g. as strage magna or maxima (great (est) murder/bloodbath), while the Teutonic Order admitted the killing of 15 to 16 Pomerelian knights. The testimonies from the lawsuits and the order's responses are the primary sources used by historians to reconstruct the events.
The lawsuits did not have any practical effect on the order, who won both cases by appeal. In the 15th century, era of the Polish-Teutonic Wars, medieval Polish chronicler Jan Długosz in epic prose described the event as a slaughter of Polish nationals, regardless of condition, age or sex.
Modern sources are divided as to the actual extent of the massacre though they all agree that mass killings did take place. Historian Matthew Kuefler states: "German and Polish historians in the twentieth century tended to have diverging [views] both on the question of whether Pomerelia really "belonged" to Poland and also on the degree of ferocity of the order's conquest". The city of Gdańsk states that "The Teutonic Knights, having captured the castle in 1308 butchered the population. Since then the event is known as the Gdańsk slaughter". In many Polish works, the takeover is referred to as "Gdańsk slaughter" (rzeź Gdańska). Norman Davies in his extensive history of Poland, while not insisting on the number of 10,000 dead, says that the knights "drove Waldemar from the city, and calmly slaughtered its inhabitants", similar descriptions are presented also in some other English books with sections on Polish history. Jerzy Lukowski in "A concise history of Poland" says that the knights massacred "Lokietek's men". Błażej Śliwiński says that there was a bloodbath which cost an abundance of lives, though not 10,000, and that such massacres were common in medieval Europe., and that the term "slaughter" in Medieval Ages usually meant murder of around 1000 people.