[4] This marked a part of a broader movement for city's autonomy from the control of the Teutonic Knights; previously councilmen and mayors could not be appointed without the order's approval.
Letzkau, along with Arnold Hecht and Peter Vorrath, was one of the initiators of a letter to the Grand Master, signed by Prussian nobility and representatives of major cities in Teutonic Prussia, complaining about the Order's tax collectors and administrators who interfered with the trade in grain and other goods in the region.
Letzkau in particular often traveled to conventions and meetings of the representatives of Hansa towns which allowed him to compare the favorable conditions abroad with those he found in his own city under the control of the Knights.
The komtur leading the regiment, Johann von Schönfeld, escaped from the battlefield while most of the three hundred regular soldiers, composed mostly of Danzig's burghers and ordinary citizens, were taken captive by the Poles and Lithuanians.
[4] The defeat of the Order, combined with previous anger at the Knights' economic policies, resulted in a gradual but definitive shift among the city council to a pro-Polish stance.
[4] However, as the Polish siege of Marienburg prolonged, the interim leader of the Order Heinrich von Plauen the Elder realized that the Polish–Lithuanian king did not have the means to enforce his de jure suzerainty over the rebellious towns.
[4] Despite this fact, the citizens of the city continued to resent the Order's rule which manifested itself mostly through the refusal to pay taxes or otherwise support the Knights' military efforts in the war with Poland.
[4] Soon after, a conference was held between the Grand Master von Plauen and representatives of the city, including Letzkau, Peter Vorrath, and Herman Kleinemeister.
Von Plauen agreed but in return demanded that a new tax be created, proceeds from which were to be used in arming the Knights for a future war with Poland which everyone expected to begin again.
In turn, Letzkau and others made the payment of the tax conditional on the Order respecting all the privileges and rights that were granted to the city by the Polish king Jagiello.
Von Plauen closed down the Danzig harbor with a large iron chain and ordered that all trade from then on was to be carried out through the port of Elbing, which the Knights held in direct control.
Tiedemann Huxer, the man who turned away at the last minute, was made a mayor of the city, which has led to speculations that he was part of the conspiracy to murder the councilmen.
[6] Currently, a tablet in the St. Mary's Church in Gdańsk, in front of the chapel of St. Jadwiga of Poland, commemorates Letzkau's and Hecht's death with an inscription in Latin which reads: "Here rest the honorable men Konrad Letzkau and Arnold Hecht, proconsuls of the city of Gdańsk, who departed this world the Monday after Palm Sunday in the year of our Lord 1411"[1] A street in the Wrzeszcz district (New Scotland neighborhood) is named after him.