Swantibor tried to make his son Otto II archbishop of Riga, against the will of the Order, who supported John of Wallenrode as their candidate for the position. In the Battle of Grunwald in 1410, a Pomeranian contingent led by Swantibor's son Casimir V, fought on the side of the Order. The Order lost the battle and Casimir was taken prisoner by the victorious Poles. He was, however, released soon afterwards. In 1388, Charles IV's son Sigismund (1368–1437) enfeoffed Jobst of Moravia (1351–1411) with the Margraviate of Brandenburg. Conflicts erupted again between Brandenburg and Pomerania. In 1409, a compromise was reached between Jobst and Swantibor and Jobst enfeoffed Swantibor with the Lordship of Beeskow. Swantibor then fell into disputes with the local nobility in Beeskow, who had previously supported him against Jobst. After Jobst died in 1411, Sigismund enfeoffed Brandenburg to Burgrave Frederick VI of Nuremberg, who later became Elector of Brandenburg as Frederick I. Swantibor initially remained on his post as governor of the Mittelmark. In 1412, however, he retired ane left the business of government to his sons. Swantibor's sons soon fell into military conflicts with Frederick and Dukes Otto II and Casimir V defeated Frederick in the second Battle at the Kremmen Causeway. Swantibor I died on 21 June 1413, while the conflict with Brandenburg was still raging. He was buried in the Cistercian monastery at Kołbacz. The verdict of the historian Martin Wehrmann (1861–1937) was the Duke Swantibor seems to have been an energetic and capable ruler, who was unfortunately, due to the condition of his country, unable to achieve permanent results. Marriage and issue In 1374, Swantibor I married Anna, the daughter of the Burgrave Albert the Beautiful of Nuremberg, and granddaughter of Frederick IV, Burgrave of Nuremberg. Two sons and a daughter survived him: Otto II ( – 1428) Casimir V (after 1380 – 1434) Margaret, married Ulrich I, Duke of Mecklenburg-Stargard Ancestors See also List of Pomeranian duchies and dukes Citations Notes References Bibliography Klaus Conrad: Herzogliche Schwäche und städtische Macht in der zweiten Hälfte des 14. und im 15. Jahrhundert, in: Werner Buchholz (ed.): Deutsche Geschichte im Osten Europas. Pommern, Siedler Verlag, Berlin, 1999, , p. 127-202 Martin Wehrmann: Geschichte von Pommern. vol. 1, 2nd ed., Verlag Friedrich Andreas Perthes, Gotha, 1919, reprinted: Augsburg, 1992, E. Rymar: Rodowód książąt pomorskich'', Szczecin, Pomeranian Library, 2005, ISBN 83-87879-50-9, OCLC 69296056. Dukes of Pomerania House