attempt on 21 October 1371, St. Ursula's Day, to overthrow Lüneburg militarily and to secure the old ducal rights, failed. In the military conflict that followed, neither the Brunswicks nor the Wittenbergs were able to enforce their claims, and only the peace of Hanover in 1373, ended the war, at least for a time. According to the agreement reached there, the Welfs and the Wittenbergs were to rule alternately. Magnus Torquatus had already died in 1373, so the treaty between the two contending houses was further reinforced by the marriage of his two eldest sons, Frederick and Bernard I, to the two daughters of Wenceslas and by the marriage of Magnus's widow to Albert of Saxe-Wittenberg. The younger brother of Frederick and Bernard, Henry the Mild refused, however, to accept the agreement and continued to prosecute the war. It was not until after the Battle of Winsen in 1388, when Wenceslas lost his life, that the Wittenbergs gave up their claims and the principality was finally secured by the Welfs. Lüneburg Sate and Lüneburg Sate War The Lüneburg War of Succession resulted in a large plenitude of power going to the estates within the principality . To secure the support of towns and the lower nobility, both the Welfs and the Ascanians were forced to give the estates wide privileges, and enfeoff them with numerous rights and castles. The Celle dukes, Bernard and Henry had emerged victorious from the conflict to be sure, but faced huge financial problems as a result. So when they appeared before the town of Lüneburg with a fresh request for funds in September 1392, they had to agree to a significant treaty, the so-called Lüneburg Sate, in which the estates were granted numerous privileges and the dukes had to submit to the authority of a council of the landowners of the estates, in return for a loan of 50,000 marks. The years that followed were characterised by renewed tensions between the rulers and the landowners and attempts by the dukes to weaken the standing of the Lüneburg Sate. In 1396 it was finally rejected. After he had secured the assistance Sweden and Mecklenburg by concluding a treaty of friendship and security, Duke Henry, soon to be followed by his brother, Bernard, took the town of Uelzen as his residence, which forced the town to announce its withdrawal from the Sate and to pay homage to