Ladislaus II or Ladislas II was King of Hungary and Croatia between 1162 and 1163, having usurped the crown from his nephew, Stephen III.
Ladislaus II stealing the Holy Crown of Hungary (from the Illuminated Chronicle)
Béla's parents—Béla II of Hungary and Queen Helena of Rascia—at the assembly of Arad in 1131 (from the Illuminated Chronicle)
Stephen III was King of Hungary and Croatia between 1162 and 1172. He was crowned king in early June 1162, shortly after the death of his father, Géza II. However, his two uncles, Ladislaus and Stephen, who had joined the court of the Byzantine Empire, challenged his right to the crown. Only six weeks after his coronation, the Byzantine Emperor Manuel I Komnenos launched an expedition against Hungary, forcing the Hungarian lords to accept Ladislaus' rule. Stephen sought refuge in Austria, but returned and seized Pressburg. Ladislaus, who died on 14 January 1163, was succeeded by Stephen's younger uncle and namesake, Stephen IV, without resistance, but his rule was unpopular. The young Stephen defeated his uncle on 19 June 1163 and expelled him from Hungary.
Stephen III's seal
Stephen III is crowned king (from the Illuminated Chronicle)
Stephen III's uncle, Ladislaus II usurps the throne (from the Illuminated Chronicle)
Byzantine Emperor Manuel I Komnenos who seized large parts of Stephen III's kingdom