Category
page 19th-century dukes in Europe
Rastislav
Grand Duke of Moravia

Bořivoj I
Duke of Bohemia (9th century)

Otto I
Duke of Saxony
Kocel
Principality of Lower Pannonia under Kocel|thumb|250px
Spytihněv I, Duke of Bohemia
Duke of Bohemia
Liudolf
Duke of Saxony
Bruno, Duke of Saxony
Catholic saint
Trpimir I of Croatia
Duke of Croatia
Branimir of Croatia
Duke of Croatia
Ljudevit Posavski
Duke of Croatia
Borna of Croatia
Duke of Croatia
Hugh, Duke of Alsace
French duke
Zdeslav of Croatia
Duke of Croatia
Domagoj of Croatia
Duke of Croatia
Godfrid, Duke of Frisia
Danish viking leader
Višeslav of Croatia
Duke of Croatia
Mislav of Croatia
Duke of Croatia
Poppo, Duke of Thuringia
German margrave
Vojnomir
thumb|Before the attack on the Avars, the Friulian-Slavic army receives a blessing from Paulinus II
Vojnomir, Voynomir or Vonomir I was a Slavic military commander in Frankish service, the duke of Slavs in Lower Pannonia, who ruled from c. 790 to c. 800 or from 791 to c. 810 over an area that corresponds to modern-day Slavonia, Croatia.
Conrad, Duke of Thuringia
Frankish noble
Slavomír
duke of Moravia
Vladislav of Croatia
Duke of Croatia
Gelou
thumb|Gelou. Statuary in Gilău, Cluj|Gilău, Romania
thumb|right|alt=A page from an old codex presenting a large green P initial decorated with tendrils|First page of the lone manuscript preserving the text of the Gesta Hungarorum, the only [[chronicle which mentions Gelou]]
Gelou (; ) was the Vlach ruler of Transylvania at the time of the Hungarian conquest of the Carpathian Basin around 900 AD, according to the Gesta Hungarorum. Although the Gesta Hungarorum, which was written after 1150, does not indicate the enemies of the conquering Hungarians (Magyars) known from earlier annals and chroni
Burchard, Duke of Thuringia
German noble
Guerin of Provence
French noble
Seguin I of Gascony
Duke of Gascony
Miliduch
Miliduch or Miliduh (, , ; d. 806) was an Early Slavic ruler (duke) of the Sorbs, a Polabian Slavic ancestral tribe of modern Sorbs.
Thachulf, Duke of Thuringia
Duke of Thuringia
Egino
Duke of Thuringia

Iljko of Croatia
An unnamed son of Domagoj, according to older historiography named Iljko which is probably an erroneous translation of , was a duke ('''') in Croatia from 876 until 878.
John
Frankish Duke of Istria in the early years of the 9th century
Tunglo
Tunglo (c. 826) was an Early Slavic ruler (duke) of the Sorbs, a Polabian Slavic ancestral tribe of modern Sorbs. He is mentioned in the Royal Frankish Annals, as one of Sorbian leaders () who was suspected of disobedience towards the Carolingian emperor Louis the Pius, as also recorded in the Vita Hludowici Imperatoris. In May 826, at a meeting at Ingelheim, dukes of the Obotrites and Tunglo of the Sorbs () were accused in absence, and required to appear before the emperor. In October of the same year, both Čedrag and Tunglo came to Ingelheim, where the imperial assembly was held, thus trying
Radulf II, Duke of Thuringia
9th century Thuringian ruler