Vladislav II was a ruler of the principality

Principality

A principality is a monarchical feudatory or sovereign state, ruled or reigned over by a monarch with the title of prince or princess, or by a monarch with another title within the generic use of the term prince....

 of Wallachia

Wallachia

Wallachia or Walachia is a historical and geographical region of Romania. It is situated north of the Danube and south of the Southern Carpathians...

, from 1447 to 1448, and again from 1448 to 1456.

Vladislav assassinated Vlad II Dracul

Vlad II Dracul

Vlad II , known as Vlad Dracul , was a voivode of Wallachia. He reigned from 1436 to 1442, and again from 1443 to 1447...

, ruler of Wallachia, and was subsequently placed on the throne by John Hunyadi

John Hunyadi

John Hunyadi John Hunyadi (Hungarian: Hunyadi János , Medieval Latin: Ioannes Corvinus or Ioannes de Hunyad, Romanian: Iancu (Ioan) de Hunedoara, Croatian: Janko Hunjadi, Serbian: Сибињанин Јанко / Sibinjanin Janko, Slovak: Ján Huňady) John Hunyadi (Hungarian: Hunyadi János , Medieval Latin: ...

. On July 22, 1456, Dracul's son, Vlad III Dracula killed Vladislav in hand-to-hand combat. Although Vladislav's gravestone is marked August 22, 1456, that was the date of the engraving.