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Mieszko I

Duke of Poland (ruled c. 960–992)

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Through Christians, Poland and Monarchy

According to existing sources, Mieszko I was a potent politician, a talented military leader and a charismatic ruler. Through both alliances and military force, he extended ongoing Polish conquests. Early in his reign, he subjugated Kuyavia and likely Gdańsk Pomerania and Masovia. For most of his reign, Mieszko I waged war for control of Western Pomerania. He eventually annexed it to the vicinity of the lower Oder River. His internal reforms were aimed at expanding and improving the so-called war monarchy system. During the last years of his life, he fought the Bohemian state and captured Silesia and lands now constituting Lesser Poland.

In foreign policy, Mieszko I placed the interests of his country foremost and entered into agreements with his former foes. He successfully used diplomacy by concluding alliances with Bohemia, Sweden and the Holy Roman Empire. Mieszko's alliance with the Czech prince Boleslaus the Cruel was strengthened by his marriage in 965 to the Přemyslid princess Dobrawa, who is said to have brought the Christian faith to Poland. Mieszko's baptism in 966 placed him and his country in the cultural sphere of Western Christianity; he is sometimes called the "Clovis of Poland" for his role in laying the foundations for a Christian Poland. On his death, he left to his son and successor, Bolesław I the Brave, a country with greatly expanded territories and a well-established position in Europe.

Mieszko I appeared as "Dagome" in a papal document dating to about 1085, called Dagome iudex, which mentions a gift or dedication of Mieszko's land to the Pope almost a hundred years earlier. The term possibly refers to Mieszko's adopted Christian name, Dagobert, which often features in historical writing. He also had a daughter who went to become a queen consort of Denmark and used to be identified with the figure of Scandinavian queen Sigrid the Haughty. Through his daughter, Mieszko became the grandfather of Canute the Great and the great-grandfather of Gunhilda of Denmark, Canute the Great's daughter and wife of Henry III, Holy Roman Emperor.

Early life

There is no certain information on Mieszko's life before he took control of his lands. Only the Lesser Poland Chronicle gives the date of his birth as somewhere between the years 920–931 (depending on the version of the manuscript); however, modern researchers do not recognize the chronicle as a reliable source. Several historians, on the basis of their investigations, postulated the date of Mieszko's birth to have been between 922 and 945; The activity of the Duke in his final years of life puts the date of his birth closer to the latter year.

Mieszko's name has traditionally been thought to be a diminutive of Mieczysław, but this is refuted by the majority of modern historians. According to a legend first described by Gallus Anonymus, Mieszko was blind during his first seven years of life. This typical medieval allegory referred to his paganism rather than an actual disability. Another name of Mieszko, "Dagome", appears in the Dagome iudex document, though its origin is uncertain. Historians speculate that it was derived from Mieszko's adopted Christian name Dagobert or an abbreviation of the two names – "Dago" for Dagobert and "me" for Mieszko.

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