Boleslaus II, Duke of Bohemia

This article is about the Bohemian duke nicknamed Boleslaus the Pious. For the Polish duke nicknamed Boleslaus the Pious, see Boleslaus of Greater Poland.
Boleslaus II
Duke of Bohemia

Fresco in the Znojmo Rotunda, 12th-century
Reign 972 - 999
Spouse(s) Adiva
Emma of Mělník
Noble family Přemyslid dynasty
Father Boleslaus I, Duke of Bohemia
Mother Biagota
Born c.930
Died 7 February 999(999-02-07)

Boleslaus II the Pious (Czech: Boleslav II. Pobožný; c.930 - 7 February 999), a member of the Přemyslid dynasty,[1] was Duke of Bohemia from 972 until his death

Life and reign

Boleslaus was an elder son of Duke Boleslaus I the Cruel and brother of the three other children of his father who survived to adulthood: Strachkvas, Dobrawa (the wife of Duke Mieszko I of Poland) and the abbess Mlada.[2] His mother may have been Biagota, a mysterious figure known only known from her coins. According to some historians, she was the wife of Boleslaus I.[3]


Boleslaus II took over the rule of the Duchy of Bohemia as kníže (a title that may be translated either as duke or prince) on his father's death in 972. Like his father, Boleslaus II initially quarrelled with the Ottonian kings of Germany. In 974 he and Duke Mieszko I of Poland supported the rebellious Duke Henry II of Bavaria in his civil war against the rule of Emperor Otto II. In 976, Henry was defeated and fled to Boleslaus' court at Prague Castle, whereafter Otto's forces campaigned the Bohemian lands. Finally in 978, Boleslaus solemnly pledged allegiance to the emperor at the Easter festivities in Quedlinburg.

In turn, the relations with Poland deteriorated from about 980 onwards. When Emperor Otto II died in 983 and was succeeded by his minor son Otto III, the alliance was overturned, as Boleslaus again allied with the insurgent Bavarian Duke Henry, while Mieszko I took the side of the young king. Moreover, when Boleslaus occupied the Saxon Margravate of Meissen, he thwarted the plans of Mieszko's son Bolesław, who had married a daughter of Margrave Ricdag. In 987 Boleslav had to retire from Meissen; from about 990, he sparked a long-lasting conflict with Poland around the lands of Silesia and Lesser Poland. In 992 he approached to King Otto III and participated in an unsuccessful campaign against the Lutici tribes in the wake of the 983 Great Slav Rising.

Unification of the Bohemian lands

Bohemian lands during the reign of Boleslaus I and Boleslaus II

Boleslaus's reign is most notable for the foundation of the Diocese of Prague in 973,[4] earning him the epithet "The Pious" by the medieval chronicler Cosmas of Prague. Nevertheless, the Bohemian diocese was placed at that time within the jurisdiction of the Archbishop of Mainz and Emperor Otto II enforced the appointment of the Saxon monk Thietmar (Dětmar) as first bishop.

Meanwhile, the struggle with the rivalling Slavník dynasty flared up again from 981 onwards, when Prince Soběslav striving for independence began to forge alliances with the Polish and Saxon rulers. Upon Bishop Dětmar's death in 982, Soběslav's brother Adalbert (later known as Saint Adalbert of Prague) was appointed his successor until he abandoned his primacy to lead a mission to the Old Prussians in 994. On 28 September 995, Boleslaus' forces and the confederate Vršovci clan stormed Libice Castle in southern Bohemia and massacred the members of the Slavník dynasty that were found there.[5] Boleslaus's brutal triumph ensured the unity of Bohemia under a single ruler.

Marriages and issue

St Adalbert of Prague pleads with Boleslaus II for the release of Christians slaves, Gniezno Cathedral door - detail

Boleslaus's first wife Adiva may have been a daughter of the English king Edward the Elder (Ælfgifu who married "a prince near the Alps"), though the evidence for this is weak. His second wife was Emma of Mělník. It is certain the Boleslaus's oldest son was born by Adiva, but the mother of the others cannot be established with certainty:

Soon after his father's death, Boleslaus III entered into conflict with his brothers and was deposed in 1002. The internal struggles of the Přemyslid dynasty shook the Bohemian duchy, until Duke Oldřich's efforts stabilised the country.


  1. "The Přemyslids". Retrieved 15 September 2012.
  2. Sobiesiak, p. 16.
  3. Sobiesiak, p. 236-237.
  4. Bohemia to the Extinction of the Premyslids, Kamil Krofta, Cambridge Medieval History:Victory of the Papacy, Vol. VI, ed. J.R. Tanner, C.W. Previte-Orton and Z.N. Brooke, (Cambridge University Press, 1957), 432.
  5. "Boleslaus II the Pious". Retrieved 15 September 2012.


Boleslaus II, Duke of Bohemia
Born: c.932 Died: 7 February 999
Preceded by
Boleslaus I
Duke of Bohemia
Succeeded by
Boleslaus III
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