According to churchman Regino of Prüm, Constantine Porphyrogenitus and other contemporary sources, the Magyars fought the Bavarians, Bulgarians, Carinthians, Franks and Moravians in the Carpathian Basin. Among the Magyars' opponents the same sources noted many local rulers, including Svatopluk I of Moravia, Luitpold of Bavaria and Braslav, Duke of Lower Pannonia. The "Gesta Hungarorum"the earliest extant Hungarian chronicle, written after 1150instead mentioned Glad, lord of the lands between the Danube and the Mureș (now known as the Banat in Romania and Serbia) and other local rulers absent from the earlier sources. Therefore, the credibility of the "Gesta" reports is a subject of scholarly debate. Although Vlad Georgescu, Ioan Aurel Pop and other historians describe Glad as one of the local Romanian rulers who attempted to resist the invading Hungarians, other scholarsincluding Pál Engel and György Györffycall him one of the dozen "imaginary figures" invented by Anonymus (author of the "Gesta") as foes in the Hungarian conquest of the Carpathian Basin.