Borivoj I of Bohemia

Bořivoj I
Duke of Bohemia
Baptism of Duke Bořivoj, 19th century painting
Reign	867–889
Predecessor	unknown
Successor	Spytihněv I
Spouse(s)	Ludmila
Noble family	Přemyslid dynasty
Born	c. 852
Died	c. 889

Bořivoj I (Czech pronunciation: [ˈbɔr̝ɪvɔj], Latin: Borzivogius, c. 852 – c. 889) was the first historically documented Duke of Bohemia and progenitor of the Přemyslid dynasty. His reign over the Duchy of Bohemia is believed to have started about the year 870, but in this era was subordinated to Great Moravia. One of the most important clues to the approximate time of his accession is the contemporary Frankish chronicle Annales Fuldenses, which mentions several West Slavic princes in the year 872, among them one Goriwei, who may be identical with Bořivoj.

According to the early 12th-century Chronica Boëmorum, Bořivoj was a son of the legendary Bohemian prince Hostivít, thus a descendant of Queen Libuše and her husband Přemysl the Ploughman. His ancestry has not been conclusively established by historians, however. In view of his dependence on Great Moravia, he might have been related by blood to the Mojmir dynasty.

Bořivoj initially resided at Levý Hradec, a gord situated northwest of present-day Prague. As the head of the Přemyslids who dominated the Central Bohemian environs, Bořivoj declared himself kníže ("prince") - in Latin dux, which means a sovereign prince - around the year 867 AD. His title was later translated by German scholars as "duke" (Herzog) of the Bohemians (Czechs). Although the rulers of the German stem duchies emerging in the late 9th century held the same title, the meaning of his title was in fact completely different. In contrast to the German dukes who acted as the representatives of higher rulers (kings or emperors), the Czech dux denoted a sovereign ruler. Bořivoj was recognised as such around 872 by his overlord King Svatopluk I of Moravia, who dispatched Bishop Methodius of Thessalonica to begin the Christianization of Bohemia.