The holy, glorious and right-victorious Great Martyr Lazar, Prince of Serbia (Свети Великомученик кнез Лазар, also Lazarus, or Lazar of Kosovo) was one of the Serbian noblemen who ruled the Serbian empire after the death of Emperor Dušan. After death of Emperor St. Uroš V (December 2), Lazar was de facto ruler of Serbia. He died for Christ's name on June 15, 1389. His feast day is June 15/June 28.