According to 10th century "First Old Slavonic Legend" about Wenceslaus I, Duke of Bohemia, after his murder in 929 or 935 which ordered his brother Boleslaus I, their mother Drahomíra fled in exile to "Xorvaty". This is the first local account of the Croatian name in Slavic language. While some considered that those Croats lived near Prague, others noted that in the case of noble and royal fugitives tried to find security as distant as possible, indicating these Croats probably were located more to the East around Vistula valley. There were also some attempts to relate with Croats an anonymous neighbor ruler ("vicinus subregulus") who was unsuccessfully helped by Saxons and Thuringians at war against Boleslaus I, but the evidence is inconclusive. The Prague Charter from 1086 AD but with data from 973 mentions that on the Northeastern frontier of the Prague diocese lived ""Psouane, Chrouati et altera Chrowati, Zlasane..."". It is very rare that on a small territory lived two tribes of the same name, indicating that the "Crouati" were probably settled East of Zlicans and West of Moravians having a territory around the Elbe river, while the other "Chrowati" were present in Silesia or along the Upper Vistula in Poland because the diocese expanded up to Kraków. The Eastern part of the diocese territory was part of the Moravian expansion in the 9th and Bohemian expansion in the 10th century. Some scholars located these Czech Croats within the territory of present-day Chrudim, Hradec Králové, Libice and Kłodzko. Vach argued that they had the most developed techniques of building fortifications among the Czech Slavs. Many scholars consider that the Slavník dynasty, who competed with the Přemyslid dynasty for control over Bohemia and eventually succumbed to them, was of White Croat origin. After the Slavník dynasty's main Gord (fortified settlement) Libice was destroyed in 995, the Croats aren't mentioned anymore in that territory.