King Stephen I made the city the seat of the castle county of Kolozs, and King Saint Ladislaus I of Hungary founded the abbey of Cluj-Mănăştur ("Kolozsmonostor"), destroyed during the Tatar invasions in 1241 and 1285. As for the civilian colony, a castle and a village were built to the northwest of the ancient Napoca no later than the late 12th century. This new village was settled by large groups of Transylvanian Saxons, encouraged during the reign of Crown Prince Stephen, Duke of Transylvania.