German . The Italians called the Hungarians as Ungherese, the country as Ungheria. When referencing the Magyars, the oldest Medieval Latin sources usually use , , late high medieval sources started to use a "H" prefix before the ethnonym: , , but some of the later high medieval sources call them or . The "H" prefix before the ethnonym and country name appeared in official Latin language Hungarian documents, royal seals and coins since the reign of king Béla III (r. 1172–1196). The German and Italian languages preserved the original form (without H prefix) of the ethnonym. The addition of the unetymological prefix "H-" in High Medieval-era Latin is most probably due to early historical associations of the Hungarians with the Huns who settled Hungary prior to the Avars and the Hungarians themselves; for example the use by Theophylactus Simocatta of the name "Hunnougour, descendants of the Hun hords". The ethnonym is the Latinized form of Byzantine Greek (). According to an explanation, the Greek name was borrowed from Old Bulgar ągrinŭ, which was in turn borrowed from Oghur-Turkic On-Ogur (meaning "ten [tribes of the] Ogurs"), the collective name for the tribes which later joined the Bulgar tribal confederacy that ruled the eastern parts of Hungary after the Avars. The Hungarians probably belonged to the Onogur tribal alliance and it is very possible that they became its ethnic majority. In early medieval sources, in addition to the Hungarians, the exonym or referred to the Mansi and Khantys also. It may refer to the Hungarians during a time when they dwelt east of the Ural Mountains along the natural borders of Europe and Asia before the Hungarian conquest of the Carpathian Basin in 895–6. The toponym or referred to that territory from around the 12th century. Herodotus in the 5th century BC probably referred to ancestors of the Hungarians when he wrote of the Yugra people living west of the Ural Mountains. The origin of the English ethnonym and country name The English word "Hungary" is derived from Medieval Latin Hungaria. Hungarian sources According to one view, following Anonymus's description, the Hungarian federation in the 9th century was called ("Seven Magyars"): ("seven princely persons who are called Seven Magyars"), though the Chronicler refers to "seven leading persons" instead of a polity. Other sources In Byzantine sources in Medieval Greek, the nation was denominated the "Western ". Hasdai ibn Shaprut denominated the