* Chronicon of Thietmar of Merseburg

This view is based on the fact that Thietmar of Merseburg in his chronicles named Gunzelin, Gunther's son, brother of Bolesław I the Brave, Dobrawa's son.

According to Thietmar of Merseburg, Géza continued to worship pagan gods ; a chronicle claims that when he was questioned about this he stated he is rich enough to sacrifice to both the old gods and the new one.

Thietmar of Merseburg first mentioned the site as Salsa Cholbergiensis.

During Polish rule of the area in the late 10th century, the chronicle of Thietmar of Merseburg ( 975-1018 ) mentions salsa Cholbergiensis as the see of the Diocese of Kołobrzeg, set up during the Congress of Gniezno in 1000 and placed under the Archdiocese of Gniezno.

Leipzig was first documented in 1015 in the chronicles of Bishop Thietmar of Merseburg and endowed with city and market privileges in 1165 by Otto the Rich.

Due to the death of Thietmar of Merseburg, the principal chronicler of that period, there is little information about Mieszko II's life from 1018 until 1025, when he finally took over the government of Poland.

More precise contemporary records regarding Mieszko were compiled by Widukind of Corvey, and half a century later, by Bishop Thietmar of Merseburg.

Thietmar of Merseburg became the first bishop of the newly-created bishopric of Prague in Bohemia, appointed in 973.

* Thietmar of Merseburg, bishop and chronist

The earliest surviving references to the city are found in the chronicles of Thietmar of Merseburg, written between 1012 and 1018: episcopus Posnaniensis (" bishop of Poznań ", in an entry for 970 ) and ab urbe Posnani (" from the city of Poznań ", for 1005 ).

The city's name was first recorded, in Latin, in the form " Wrotizlava ", in the chronicle of Thietmar of Merseburg, which mentions it as a seat of a newly installed bishopric in the context of the Congress of Gniezno.

Between 1012 and 1018 Thietmar of Merseburg wrote a Chronicon, or Chronicle, in eight books, which deals with the period between 908 and 1018.

According the German chronicler Bishop Thietmar of Merseburg, the decades long forced Germanization and Christianization of the Slavs associated with these two churches was the reason for their destruction.

* Thietmar of Merseburg

The chronicle of Thietmar of Merseburg, who died in 1018, could have been regarded as the only contemporary and unbiased account of events, if it were not for the fact that Thietmar's data could have been supplied by Svyatopolk himself during his brief exile at the Polish court.

The name of the river Spree was by Thietmar of Merseburg recorded as Sprewa ( Middle German sprejen, sprewen, High German sprühen meaning to spray water ).

For the Monumenta Germaniae historica he edited the Chronicon of Thietmar of Merseburg, the Gesta Hammenburgensis ecclesiae pontificum of Adam of Bremen and the Chronica Slavorum of Helmold, with its continuation by Arnold of Lübeck.

The earliest historical reference to Sacz is in the Latin chronicle of Thietmar of Merseburg of 1004.

Major works include a chronicle of Thietmar of Merseburg from the beginning of the 11th century, who described a temple in the city of Riedegost ( Radegast ) where the great deity Zuarasic ( Svarožič ) was worshipped.

According to the chronicles of Thietmar of Merseburg, Otto III, who had been a friend of Adalbert, committed to a pilgrimage from Italy to St. Adalbert's tomb in Gniezno ; in his attempt to extend the influence of Christianity in Eastern Europe, and to renew the Holy Roman Empire based on a federal concept (" renovatio Imperii Romanorum ") with the Polish and Hungarian duchies upgraded to eastern federati of the empire.

* Thietmar, Count of Merseburg ( died 932 )

* Thietmar of Merseburg ( 975 – 1018 ), bishop and chronicler

According to Thietmar of Merseburg, Svarožič ( Latinized Zuarasici ) was worshipped by a tribe of Ratars in the city of Ridegost ( Rethra ).

The first is the chronicles of Thietmar, who was born two years before the death of Dobrawa.

But Thietmar states that Boleslaus I of Poland firstly supported his son-in-law against Yaroslav in 1017, which is the date, according to the Russian Primary Chronicle, of Svyatopolk's first defeat by Yaroslav.

The first known historic record comes from 1010, in Thietmar of Merseburg's chronicles, after the troops of King Henry II of Germany in the conflict over the March of Lusatia and the Milceni lands had attacked the forces of the Polish Duke Bolesław I Chrobry and again besieged Glogua on August 9, 1017 without result.

The name “ Zara ”, deriving most likely from a small, independent West Slavic tribe, appeared for the first time in 1007 in the chronicles of Thietmar of Merseburg, at the time, when Duke Bolesław I Chrobry of Poland had conquered the Żary land along with the eastern March of Lusatia.

The town is first mentioned as Zirwisti urbs in the chronicle of the Thietmar of Merseburg in 1018.

In January 976 Willigis probably consecrated the first Bishop of Prague, Thietmar ( Dětmar ) at Brumath in Alsace, whose diocese was put under his jurisdiction.

The Slavic settlement of Jutriboc in the Saxon Eastern March was first mentioned in 1007 by Thietmar of Merseburg, chronicler of Archbishop Tagino of Magdeburg.

In the year 1002 the city of Bautzen was first mentioned by Thietmar of Merseburg.

Possibly Mieszko took the region before 990, which is indicated by the vague remark of Thietmar, who wrote of a country taken by Mieszko from Boleslav.

According to Thietmar Mieszko I divided his state before his death among a number of princes.

Also, a theory has been advanced ( apparently recorded by Thietmar and supported by Oswald Balzer in 1895 ) that Vladivoj, who ruled as Duke of Bohemia during 1002 – 1003, was another son of Dobrawa and Mieszko I.

There is a surviving report of the ceremony by Widukind of Corvey which makes no mention of his wife having been crowned at this point, but according to Thietmar of Merseburg's chronicle Eadgyth was nevertheless anointed as queen, albeit in a separate ceremony.

According to the chronicles of Thietmar, this attack was an arbitrary action, without the consent of the Emperor:

Mieszko's conflict with Odo I was a surprising event because, according to Thietmar, Mieszko respected the Margrave highly.

According to Thietmar and other contemporary chronicles the gift given by Mieszko to the Emperor was a camel.

Also, a theory exists ( apparently based on Thietmar and supported by Oswald Balzer in 1895 ) that Vladivoj, who ruled as Duke of Bohemia in 1002 – 1003, was a son of Mieszko and Dobrawa.

However, according to the chronicler Thietmar, she was not the virgo desiderata, the anticipated imperial princess.

The chronicler Thietmar eulogized her as follows: " Though was of the weak sex she possessed moderation, trustworthiness, and good manners.

Cnut's mother's precise identity is unknown, although it is likely that she was a Slavic princess, daughter to Mieszko I of Poland ( in accord with the Monk of St Omer's, Encomium Emmae and Thietmar of Merseburg's contemporary Chronicon ).

According to Thietmar, this was the most sacred place in the land of pagan Slavs, and Svarožič was their most important deity.

The contemporary German chronicler Thietmar, who was generally ill disposed towards Poles, commented on the peace with the words " non ut decuit sed sicut fieri potuit ", meaning " not as it should have been but as was possible in the circumstances ".

Records of the battle are sparse, it was briefly described by the cronicler Thietmar of Merseburg ( 975-1018 ), whose father participated in the battle ( Chronicon II. 19 ), and mentioned by Gallus Anonymus in the 12th-century Gesta principum Polonorum.

Thietmar is probably the best informed of the medieval chroniclers addressing the question, since he was contemporary with the events described and well-informed about the events in Poland and Denmark.