JOBST, or JODOCUS (c. 1350-1411), margrave of Moravia, was a son of John Henry of Luxemburg, margrave of Moravia, and grandson of John, the blind king of Bohemia. He became margrave of Moravia on his father's death in 1375, and his clever and unscrupulous character enabled him to amass a considerable amount of wealth, while his ambition led him into constant quarrels with his brother Procop, his cousins, the German king Wenceslaus and Sigismund, margrave of Brandenburg, and others. By taking advantage of their difficulties he won considerable power, and the record of his life is one of warfare and treachery, followed by broken promises and transitory reconciliations. In 1385 and 1388 he purchased Brandenburg from Sigismund, and the duchy of Luxemburg from Wenceslaus; and in 1397 he also became possessed of upper and lower Lusatia. For some time he had entertained hopes of the German throne and had negotiated with Wenceslaus and others to this end. When, however, King Rupert died in 1410 he maintained at first that there was no vacancy, as Wenceslaus, who had been deposed in 1400, was still king; but changing his attitude, he was chosen German king at Frankfort on the 1st of October 1410 in opposition to Sigismund, who had been elected a few days previously. Jobst however was never crowned, and his death on the 17th of January 1411 prevented hostilities between the rival kings.
See F. M. Pelzel, Lebensgeschichte des romischen und bohmischen Konigs Wenceslaus (1788-1790); J. Heidemann, Die Mark Brandenburg unter Jobst von Mahren (1881); J. Aschbach, Geschichte Kaiser Sigmunds (1838-1845); F. Palacky, Geschichte von Bohmen, iii. (1864-1874); and T. Lindner, Geschichte des Deutschen Reiches vom Ende des i^Jahrhunderts bis zur Reformation, i. (1875-1880).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)