First noted in the power struggles of the 10th-12th centuries in Bohemia. The Vr?ovci were the third most powerful political force in newly Christianized Bohemia, after the reigning P?emyslids (P?emyslovci) and the contending Slavníks (Slavníkovci). They were active in Bohemian conflicts with Poland, Hungary and the Kings and Electors of the Holy Roman Empire, and also in the intermittent internal conflicts common for feudally fragmented regimes of that time. The Vr?ovci possessed such towns as ?atec and Litomice.
They had consanguinity with the P?emyslidi and often cooperated with them. Some historians supposed that, unlike their opponents, the other two leading families of Bohemia, the Vr?ovci could have retained some pagan beliefs in the 10th century.
The etymology of the clan name is still a subject of dispute. One version claims its origin to be Czech "fishnet" i.e. "Vr?a", while another opinion would have it derived from "Vrsa/Vrsvs" ("Ursa/Ursus"), Latin for "female bear/bear".
The Vr?ovci, P?emyslids and Slavníki took part in cruel power struggles that occurred in Bohemia on the turn of the first millennium. Vr?ovci and P?emyslids led by Boleslav II the Pious, fought with the rival princely clan of Slavniki. On September 28, 995 they stormed Libice nad Cidlinou in Central Bohemia and conquered the Slavníki. Among the victims were four or five brothers of future catholic saint Adalbert (Czech: Svatý Vojt?ch, Polish: ?wi?ty Wojciech), then bishop of Prague. According to the legends the saint was very impulsive. He damned the murderers(Vr?ovci). However, as some legend says the saint know how to moderate "the horse of his anger" in order to not "deviate from a bright way of the eternal life" so he escaped from Bohemia to Hungary and Poland, also legend says that he predicted the prosecution of Vr?ovci.
In 1003, when the Vr?ovci tried to dethrone Boleslav III the Red. When the expatriated duke returned to Bohemia possibly with the support of Duke Boles?aw I the Brave of Poland, he ordered a massacre of the Vr?ovci at Vy?ehrad. According to Thietmar of Merseburg, Boleslav slashed to death his son-in-law (Vr?oviec) with his own sword during Lent.
The later history of the family is unclear; there are two or more versions:
If the second is true, it could be that some of Vr?ovci (because phonetically similar surnames were spotted among szlachta of two Polish coat of arms), in the midst of nobility referred to as Oksza (Werszowic, Werszowiec, Wierszowiec) and Rawicz (Warsz, Warsza) bearers, probably participated in the Battle of Grunwald.
In the historical records among 50 Polish "banners" (regiments) is one (the 26th) under the Rawicz coat of arms led by Christian of Ostrów, castellan of Kraków, also a war councillor and one of the seven chief members of King W?adys?aw II Jagieo of Poland's general headquarters. Derslaw of Wlostow, of the arms Oksza, served as a scout and on the field of battle, and Peter of Wlostow, also of the arms Oksza, one of the knights selected by the Poles to initiate the battle. In addition, one of the Rawicz bearers, Christian of Goworzici, is marked for his military valour in the Battle of Koronowo, shortly after that of Grunwald. Oksza knights also participated at Koronowo, specifically Dobko Oksza and Jan Rey of Naglowic.