foes in the Hungarian conquest of the Carpathian Basin. Constantine Porphyrogenitus identified "the whole settlement of Turkey" (Hungary) with the basins of five rivers—the Criș, Mureș, Timiș, Tisza and the unidentified "Toutis"—around 950, indicating that the land east of the Tisza was ruled by the Hungarians at that time. The emperor apparently received information about the Carpathian Basin situation from Termatzus, Bulcsú and Gylas, three Hungarian chieftains who visited Constantinople during the mid-10th century. According to Byzantine historian John Skylitzes, Bulcsú and Gylas were baptised during their visit. Bulcsú, Skylitzes wrote, still "violated his contract with God and often invaded" the Byzantine Empire; Gylas, however, "remained faithful to Christianity" and made no further inroads against the empire. Skylitzes also mentioned a Greek monk, Hierotheos, who was ordained bishop for the Hungarians. Hierotheos accompanied Gylas back to Hungary and "converted many from the barbaric fallacy to Christianity". Most 10th-century Byzantine coins and artifacts have been unearthed around the confluence of the Tisza and the Mureș, particularly in the Banat. Tudor Sălăgean, Florin Curta and other historians posit that Gylas's lands must have been in these territories, but their theory is not universally accepted. Unlike Gylas, who chose the Eastern Orthodox Church, Géza, Grand Prince of the Hungarians, opted for Western Christianity and a cleric from the Holy Roman Empire (according to most scholars, Bruno from the Abbey of Saint Gall) baptised him during the 970s. Thietmar of Merseburg and other 11th-century authors emphasized that Géza was a cruel ruler, suggesting that the unification of the Hungarian chieftains' lands began under him. Géza was succeeded by his son, Stephen, who was crowned the first king of Hungary in 1000 or 1001. In primary sources The principal source of Ajtony's life is the Long Life of Saint Gerard, compiled from a number of earlier sources in the early 14th century. According to modern historians (including Carlile Aylmer Macartney and Florin Curta), all information on Ajtony incorporated into the Long Life was based on a ballad about the heroic deeds of Csanád—Ajtony's former commander-in-chief—because a shorter version of Bishop Gerard of Csanád's life does not mention Ajtony. Most historians agree that the ballad was composed shortly after Ajtony's death. In addition to the Long Life, Ajtony is mentioned in the Gesta Hungarorum; the Hungarian chronicle was written after around 1150. According to the Gesta, Ajtony was descended from Glad (in the same source, lord