Bolesław II was also the first Polish monarch to produce his own coinage in quantity great enough to replace the foreign coins prevalent in the country during the reigns of the first Piast kings.

Following the death of his father Casimir in 1058, Bolesław II, as the eldest son, inherited Greater and Lesser Poland as well as the Mazovian, Pomerelian, and Silesian lands.

In Hungary, Bolesław II pursued the policy of cooperation with the anti-Imperial faction, which allowed him to gain political independence from the Empire but put him in conflict with the Duchy of Bohemia, an Imperial ally.

Moreover, he escalated the conflict with the Přemyslid duke Vratislaus II by refusing to pay the annual homage for Silesia and spurring the Bohemian nobility to revolt.

Bolesław II could not defend the cause of his son Géza I against the German troops of Henry IV, who finally installed Solomon on the Hungarian throne.

From historical records[4] it appears that Bishop Stanislaus was involved with the barons' opposition movement, plotting to remove the King and to place his brother Władysław Herman on the throne.

Kadłubek categorically condemns the murder of Stanislaus as savage and unjust;[5] meanwhile, Gallus Anonymus passes negative judgement on both the bishop, on account of his treason, and on Bolesław, for his shameful conduct in administering the punishment.

A popular legend holds that Bolesław proceeded to Rome to beg forgiveness from Pope Gregory, who imposed on him to wander incognito as a mute repentant.

On a summer evening in 1082, he reached the Benedictine Abbey at Ossiach in Carinthia, where he was received and did all kind of hard work until he finally was reconciled in the Sacrament of Penance and died.

At the walls of Ossiach, there exists a tomb bearing the depiction of a horse and the inscription Rex Boleslaus Polonie occisor sancti Stanislai Epi Cracoviensis ("Bolesław, King of Poland, murderer of Saint Stanislaus, Bishop of Kraków").

In 1960, at the direction of Countess Karolina Lanckorońska, the tomb was opened and indeed revealed male bones and the remains of a Polish knight's armor dating from the 11th century.

1089), who, according to the Chronicle of Jan Długosz (and supported by some sources), was a daughter of Grand Prince Sviatoslav II of Kiev by his first wife Kilikia, possibly a member of the House of Dithmarschen.