the river Olšava, which marked the border of their realms. However, the lack of mutual confidence hindered the opening of negotiations, leading to armed conflicts which evolved into a battle on 13 May. On the battlefield, the Bohemian army inflicted a serious defeat on Stephen's troops. The contemporaneous Cosmas of Prague blamed the young king's advisors for the fiasco, but later medieval Hungarian chronicles all completed under kings descending from Stephen's opponent, Álmos wrote that the king acted without consulting his advisors "... for he was of an impetuous nature". Doge Ordelafo Faliero, who had conquered an island in the Gulf of Kvarner during the last year of Coloman's reign, returned to Dalmatia at the head of the Venetian fleet in May 1116. On 15 July, he vanquished the Hungarian troops which had arrived to relieve Zadar. Thereafter all towns including Biograd na Moru, Šibenik, Split, and Trogir surrendered to Venice, terminating Stephen II's suzerainty along the coastline of the Adriatic Sea. However, in either 1117 or 1118, the Hungarian troops were able to defeat the Venetians, during which Ordelafo Faliero himself died at a battle near Zadar, enabling Biograd na Moru, Split, and Trogir to rejoin the sovereignty of the Hungarian monarch. However, the new doge, Domenico Michele, invaded and reconquered all Dalmatia. A five-year truce, which was concluded in 1117 or 1118, confirmed the status quo: the seizure of Dalmatia by Venice. Stephen's troops launched a plundering raid into Austria in 1118, provoking a counter-attack by Leopold III, Margrave of Austria, later that same year. Bořivoj II, Duke of Bohemia, supported Leopold and pillaged the northwestern regions of the Kingdom of Hungary. Despite this, when Vladislaus I dethroned his brother Bořivoj in 1120, Bořivoj fled to Hungary and settled at Stephen's court. Stephen married a daughter of Robert I of Capua, in the early 1120s. Historian Paul Stephenson wrote that Stephen's marriage alliance with the Normans of Southern Italy "... must have been partly directed against the Venetians." The Norman princes of Capua had been the pope's staunch supporters during the Investiture Controversy, suggesting that his marriage also continued his father's pro-Papal foreign policy. According to Włodzimierz Dworzaczek, Stephen in 1121 married Adelhaid, daughter of Heinrich, burgrave of Regensburg. Stephen's cousin and the daughter of his uncle Álmos, Adelaide, whose husband Soběslav had been expelled from Moravia, arrived in Hungary in early 1123. According to Cosmas of Prague,