The region previously known as Duklja later became known as "Zeta". Between 1276 and 1309, Serbian queen Helen of Anjou, the widow of the Serbian King Stefan Uroš I, ruled Zeta, where she built and restored several monasteries, most notably the Monastery of Saints Sergius and Bacchus (Srđ and Vakh) on the Bojana river below Skadar (Shkodër). The Venetian name "Montenegro", meaning "black mountain" occurred for the first time in the charter of St. Nicholas' monastery in Vranjina, dating to 1296, during Jelena's reign. Under King Stefan Milutin (reigned 1282-1321), at the beginning of the 14th century, the archdiocese in Bar was the biggest feudal domain in Zeta.