After Vladivoj died in 1003, Bolesław the Brave invaded Bohemia and restored Boleslaus III who had many Bohemian noblemen murdered.[3][1] It is said that Vladivoj was analcoholic, and drinking was a possible contributor to his death.[4] A massacre of the Vršovci clan at Vyšehrad ordered by Boleslaus III led to his deposition and the succession of his younger brotherJaromír.
Berend, Nora; Urbańczyk, Przemysław; Wiszewski, Przemysław (2013).Central Europe in the High Middle Ages: Bohemia, Hungary and Poland, c. 900-c. 1300. Cambridge University Press.ISBN978-0-521-78156-5.
Manteuffel, Tadeusz (1982).The Formation of the Polish State: The Period of Ducal Rule, 963–1194(Translated and with an Introduction by Andrew Gorski). Wayne State University Press.ISBN0-8143-1682-4.
Třeštík, Dušan (2011). "Great Moravia and the beginnings of the stte (9th and 10th centuries)". In Pánek, Jaroslav; Tůma, Oldřich (eds.).A History of the Czech Lands. Charles University in Prague. pp. 65–79.ISBN978-80-246-1645-2.
