The year 1371 brought another tragedy to Jelena's life. Her husband Jovan Uglješa, together with his brothers Vukašin Mrnjavčević and Gojko Mrnjavčević, gathered their armies in order to try to stop the Ottoman threat rising in the Balkans. They met the Turks at Maritsa river; and in the ensuing Battle of Maritsa, two of the Mrnjavčević brothers, as well as the major part of their armies, were killed. Unfortunately, a contemporary historical account of the battle is missing. According to legend, Vukašin was surprised by the greatly outnumbered Turks and decided to camp for the night before battle. The Osmanlis waited and attacked the Serbian camps in a night raid and managed to achieve victory against all odds. The Turkish invasion of Raška and other Serbian feudal provinces was postponed, but at a high cost - the deaths of Jovan Uglješa and his brother.