Title: Boleslaus III, Duke of Bohemia
Content:  Boleslaus III (c. 965 – 1037), called the Red (Boleslav III. Ryšavý; to denote "red hair") or the Blind, a member of the Přemyslid dynasty, was duke of Bohemia from 999 until 1002 and briefly again during the year 1003. He was the "worst of all men who ever sat on the Bohemian throne". During his chaotic reign, Bohemia became a pawn in the long German–Polish War between King Henry II and Duke Bolesław I, "the Brave", of Poland.
Title: Boleslaus III, Duke of Bohemia
Content:  The eldest son of Duke Boleslaus II "the Pious", probably with his first wife Adiva, he succeeded to the Bohemian throne upon the death of his father in 999. Boleslaus III turned out to be a weak ruler and soon entered into a fierce inheritance conflict with his younger brothers Jaromír and Oldřich. He had both expelled to the Bavarian court of Henry II in Regensburg, together with their mother Dowager Duchess Emma. By 1002, a revolt organized by nobles of the rival Vršovci clan (along with Boleslaus's son-in-law) forced him to flee to Germany, where he was received by Margrave Henry I of Austria. At first, Henry I ordered the arrest of his guest because of an old offence, but soon forgave him and promised support. Meanwhile, the 
Title: Boleslaus I, Duke of Bohemia
Content:  Boleslaus I (Boleslav I. Ukrutný) (915 – 972), a member of the Přemyslid dynasty, was ruler (kníže, "duke") of the Duchy of Bohemia from 935 to his death. He is notorious for the murder of his elder brother Wenceslaus, through which he became duke. Despite his complicity in this fratricide, Boleslaus is generally respected by Czech historians as an energetic ruler who significantly strengthened the Bohemian state and expanded its territory. His accomplishments include significant economic development due to an expansion in trade, the introduction of silver mining and the minting of the first local coinage, the Prague denarius.
Title: Boleslaus II, Duke of Bohemia
Content: Boleslaus III (c. 965 – 1037), his eldest son and successor ; Wenceslaus, died as an infant ; Jaromír (c. 975 - 1035), became Duke of Bohemia in 1003 ; Oldřich (c.  975 – 1034), became Duke of Bohemia in 1012. Boleslaus's first wife Adiva may have been a daughter of the English king Edward the Elder (the daughter known to English historians as "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 that 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.
Title: Boleslaus I, Duke of Bohemia
Content:  Boleslaus was the son of Duke Vratislaus I of Bohemia (d. 921) by his marriage with Drahomíra (d. 934), probably a Hevellian princess. His father took over the rule in Prague around the time of Boleslav's birth, during which he had to deal with both the exertion of influence by the East Frankish dukes of Bavaria and Saxony and the Magyar incursions. Boleslaus and his elder brother Wenceslaus were taught the Christian faith and to read the Psalms by their grandmother Ludmila. There is evidence that Boleslaus's pagan mother might have influenced him against his brother and Christianity, though he later repented. In no way did he impede the growth of Christianity during his reign in Bohemia, and, in fact, he actually sent his daughter Mlada, a nun, to Pope John XIII in Rome to ask permission to make Prague a bishopric. 
Title: Boleslaus II, Duke of Bohemia
Content:  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, Doubravka (the wife of Duke Mieszko I of Poland) and the abbess Mlada. His mother may have been Biagota, a mysterious figure known only from her coins. According to some historians, she was the wife of Boleslaus I.
Title: Boleslaus I, Duke of Bohemia
Content: Doubravka of Bohemia, ; Boleslaus II, Duke of Bohemia, ; Strachkvas of Bohemia, ; Mlada of Bohemia. Boleslav's wife may have been Biagota. It is unknown if she was the mother of all four of his adult children:
Title: 1003
Content: February 9 &ndash; Boleslaus III is restored to authority with armed support from Duke Bolesław I (the Brave) of Poland. The following months, Boleslaus' brothers Jaromír and Oldřich flee to Germany and place themselves under the protection of King Henry II, while Boleslaus orders the massacre of his Bohemian leading nobles at Vyšehrad. ; German–Polish War: Bolesław I annexes Bohemia and parts of Moravia (modern Slovakia). German nobles under Henry of Schweinfurt revolt against Henry II (who has been promised the Duchy of Bavaria). ; Count Oliba (Taillefer) Ripoll. Oliba takes up the Benedictine habit at the Monastery of Santa Maria 
Title: Vladislaus III, Duke of Bohemia
Content:  Vladislaus Henry (Vladislav Jindřich; c. 1160 &ndash; 12 August 1222), a member of the Přemyslid dynasty, was elected Duke of Bohemia (as "Vladislaus III") in 1197 and Margrave of Moravia from 1197 until his death. He only served as duke during the year 1197 and was indeed the last ruler of Bohemia to hold that title. It was his brother Ottokar I, whose forces overthrew him, who finally achieved the elevation of the Duchy of Bohemia to the status of a kingdom starting in 1198.
Title: Oldřich, Duke of Bohemia
Content:  Oldřich was the fourth (third surviving) son of Duke Boleslaus II of Bohemia (d. 999). Like all his father's children, his mother was Adiva.Upon the death of his father, his eldest brother Boleslaus III succeeded as duke, however, he soon entered into a fierce conflict with his younger brothers Oldřich and Jaromír. In 1001, both had to flee to the Bavarian court at Regensburg. When Boleslaus III was deposed by the rival Vršovci dynasty the next year and the Polish ruler Bolesław I the Brave invaded Bohemia, King Henry II of Germany intervened. As a part of Henry's expedition to 

Question: Who is the father of Boleslaus III, Duke of Bohemia?
Answer: Boleslaus II, Duke of Bohemia.