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.

The devastation was so great that, according to Saxon sources where Mieszko II's troops put their feet grass never thence grew.

Otherwise, the costs of an extensive war caused that Mieszko II's popularity declined among his subjects, despite the fact that on the invasion of Saxony the King only defended their territory.

An additional problem was a dynastic crisis: Mieszko II's brothers continue their attempts to regain power with the help of foreign forces.

After Mieszko II's death, Poland's peasants revolted in a " pagan reaction.

The pagan reaction that followed Mieszko II's death ( probably in Poznań ) in 1034 left the region weak, and in 1038 Bretislaus I of Bohemia sacked and destroyed both Poznań and Gniezno.

Among those who did supported Henry II's claims, however, were Duke Mieszko I of Poland and Duke Boleslaus II of Bohemia.

Mieszko I of Poland also submitted to Otto II's overlordship.

Conrad campaigned unsuccessfully against Poland in 1028 – 1030, but in 1031 in a combined action with the Kievan Rus ' forced King Mieszko II, son and heir of Bolesław I, to make peace and return the land that Bolesław had conquered from the Empire during Henry II's reign.

Due to the childlessness of Otto III, the seven daughters of his sister Mathilde ( the only of Otto II's daughters who married and produced children ), were the only potential brides for Mieszko, Bolesław I's son and heir ; the oldest of Otto III's nieces, Richeza, was the chosen one.

Mieszko II's half-brother Bezprym took the government of Poland and began a cruel persecution against the followers of the former King.

Taking advantage of the King's precarious situation, Mieszko II's brothers Bezprym and Otto turned against him and allied themselves with the Emperor Conrad II, whose forces attacked the country, regaining Lusatia.

With Mieszko II's death in 1034, which probably occurred in Poznań ( and may have been the result of an aristocratic plot ), the country entered a period of anarchy and pagan reaction, which caused much devastation in the region.

Expelled by his half-brother Mieszko II Lambert after the death of their father, in 1031 Bezprym became ruler of large areas of Poland following simultaneous attack of the German and Kievan forces and Mieszko II's escape to Bohemia.

The Royal crown and regalia were personally delivered by Mieszko II's wife, Queen Richeza.

After Konrad II's victory over Polish King Mieszko II in 1031 Upper Lusatia again came under the rule of the Meissen Margraves.

The only indication is communicated by the chronicler Cosmas of Prague, who stated that the Bohemian princess at the time of her marriage with Mieszko I was an old woman.

Mieszko II was not only imprisoned but also castrated, which was to be a punishment to Bolesław I the Brave, who blinded Duke Boleslaus III the Red ( Oldřich's brother ) thirty years before.

Mieszko II and his wife never reunited again ; according to some sources they were either officially divorced or only separated.

The participation of Mieszko in the conspiracy against Otto II was documented in only one source, the chronicles of the monastery in Altaich in its entry for the year 974.

Richeza and Mieszko II never reunited again ; according to some sources, they were either officially divorced or only separated.

However, his sole rule lasted only one year: between 10 / 11 July 1034, Mieszko II died suddenly, probably killed as consequence of a conspiracy.

This document indexes the lands of ( Mieszko ), referred to as " Dagome " in the document, and his wife " Ote " and her sons by him ( Mieszko and Lambert are only named ; probably Świętopełk was already dead by that time or was in Pomerania as a ruler, according to modern hisrorians ).

According to some historians, the war lasted only a few weeks, and according to others, only finished around 995, when Bolesław I expelled his stepmother and half-brothers from Poland and took control over all Mieszko I's domains.

Therefore that same year Władysław I was forced to recall from Hungarian banishment the only son of Bolesław II the Bold and a rightful heir to the Polish throne, Mieszko Bolesławowic.

He was the only son of Mieszko II Lambert by his wife Richeza, daughter of Count Palatine Ezzo of Lotharingia ( Ezzonen ) and granddaughter of Emperor Otto II.

Initially, it seemed that victory of the High Duke was only a matter of time, since he managed to take Masovia without obstacles and forced Duke Bolesław IV the Curly to withdraw to the defense of his brother Mieszko III at Poznań in Greater Poland.

One year later ( 13 September 1195 ), the death of his only surviving brother Bolesław in the bloody Battle of Mozgawą left Władysław as the sole heir of Mieszko III.

This was most probable, and was reflected in the Bull issued by Pope Innocent III on 9 June 1210, where the Holy See demanded the restitution of all the hereditary rights of the Silesian branch according to Bolesław III's testament and also excommunicated Leszek I the White ; this edict was made by the request of an anonymous Duke of Silesia, which could have only been Henry I the Bearded ( because Mieszko I used the title of Duke of Raciborz-Opole ).

In the medieval times, during Mieszko I and Bolesław I Chrobry rules, pancerni were members of prince own force, as they only in whole army wore mail armours.

However in 1085, likely due to the pressure of the barons, Duke Władysław I recalled Mieszko Bolesławowic the only son of the deposed Bolesław II from his exile in Hungary.

These theories are based on the chronicle of Wipo of Burgundy, who described only one brother of Mieszko II, Otto.

In 1172, Mieszko began the open rebellion against his brother ; also, he supported Bolesław's eldest son, Jarosław, who was forced to became a priest thanks to the intrigues of his stepmother Christina, who wished her sons to be the only heirs.

Casimir II, however, went a different route and, in order to gain the favor of the Duke of Racibórz given him the towns of Oświęcim and Bytom ( with the fortress of Oświęcim, Bytom, Mikołów, Siewierz and Pszczyna, although some historians estimate that these fortress had belonged to Mieszko only since 1179 ).

Despite the forces of the Count palatine Goworek who also arrived to help Leszek's troops, the Silesians obtained a great victory ; however, because Mieszko III wasn't present, this victory brought to them only benefits in terms of prestige ( not counting the ransoms obtained by the Sandomierz nobles captured in the battle ).

In 1895 Oswald Balzer refuted reports that previous to her marriage with Mieszko I, Dobrawa was married to Gunther, Margrave of Merseburg and they had a son, Gunzelin.

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.

Only Gallus Anonymus mentions the then Prince on occasion of the description of his father's trip to Rus in 1018: " due to the fact that his son (...) Mieszko wasn't considered yet capable of taking the government by himself, he established a regent among his family during his trip to Rus ".

Besides his son ’ s name was also Mieszko and it is hard to believe that he was also blind.

Some sources indicate that Mieszko was not present in Quedlinburg during the gathering ; instead, he had to sent his son Bolesław as a hostage.

Mieszko decided on the alliance with Sweden probably in order to help protect his possessions in Pomerania from the Danish King Harald I and his son Sweyn.

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.

After a struggle for power between Bolesław I and Oda with her minor sons ( Bolesław's half-brothers ), the eldest son of Mieszko I took control over all of his father's state and expelled his stepmother and her sons from Poland.

Mieszko I's son Bolesław I succeeded him as Duke in 992 and Poland continued its alliance with the Empire.

Both arranged the betrothal of Bolesław's son Mieszko II Lambert with the Emperor's niece Richeza of Lotharingia.

He was the firstborn son of Mieszko I by his Czech first wife, Dobrawa, daughter of Boleslav I the Cruel, Duke of Bohemia.

Through this marriage he had a daughter Regelinda, a son, the future king Mieszko II, another daughter, and a son, Otton.

The future marriage of Bolesław I's son Mieszko to Richeza (), niece of Otto III, was also probably agreed upon at this point.

Also, was performed the marriage of his son Mieszko with Richeza of Lotharingia, daughter of the Count Palatine Ezzo of Lotharingia and granddaughter of Emperor Otto II.

In 1014 Bolesław I sent his son Mieszko to Bohemia in order to form an alliance with duke Oldrich against Emperor Henry II.

Later that year, Bolesław I's son Mieszko was sent to plunder Meissen.

Taking advantage of Czech troops ' involvement, Bolesław I ordered his son to invade Bohemia, where Mieszko met very little resistance.

Bolesław I's son, Mieszko II, crowned himself king immediately after his father died in Poznań.

Since in the Norse sagas the king of Vindland is always Burislav, this is reconcilable with the assumption that her father was Mieszko ( not his son Bolesław ).

Mieszko I's oldest son, Bolesław I the Brave, is not mentioned, perhaps because he already received his inheritance ( probably Lesser Poland, who included Kraków and some other cities ).

Nothing is known about the fate of her sons, but in 1032 her grandson Dietrich or Dytryk ( son of either Mieszko or Lambert ) returned to Poland and obtain parts of the country after the fall of Mieszko II Lambert ; however, one year later he was expelled by Mieszko II, who could reunited again Poland in his hands.