* 995 – Members of Slavník's dynasty – Spytimír, Pobraslav, Pořej and Čáslav are murdered by Boleslaus's son, Boleslaus II the Pious.

* 1264 – The Statute of Kalisz, guaranteeing Jews safety and personal liberties and giving battei din jurisdiction over Jewish matters, is promulgated by Boleslaus the Pious, Duke of Greater Poland.

* Boleslaus II the Pious succeeds Boleslav I in Bohemia.

Soon after Jagiello accession to the Polish throne, Jagiello granted Vilnius a city charter like that of Kraków, modeled on the Magdeburg Law ; and Vytautas issued a privilege to a Jewish commune of Trakai on almost the same terms as privileges issued to the Jews of Poland in the reigns of Boleslaus the Pious and Casimir the Great.

* Boleslaus the Pious, duke of Greater Poland

He was succeeded by his oldest son Boleslaus the Pious.

Boleslaus II the Pious

: For another Boleslaus the Pious, see Boleslaus of Greater Poland.

Boleslaus II the Pious () ( c. 932-7 February 999 ) was Duke of Bohemia from 972, a member of the Přemyslid dynasty.

Jaromír ( c. 975-4 November 1035 ) was the second son of Boleslaus II the Pious and Emma of Mělník.

Together with Přemyslids led by Boleslaus II the Pious they rivalised with Slavniki clan.

For his service to the Dukes of Greater Poland, most notably to Boleslaus the Pious and to Przemysł II he was awarded on January 8, 1294, with the village of Polanowo.

1264 Polish Prince Boleslaus the Pious issued Statute of Kalisz – The General Charter of Jewish Liberties in Poland.

The General Charter of Jewish Liberties known as the Statute of Kalisz was issued by the Duke of Greater Poland Boleslaus the Pious on September 8, 1264 in Kalisz.

* Boleslaus II the Pious ( 972 – 999 )

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.

A Jewish slave trader being presented to Boleslaus I, Duke of Bohemia | Boleslaus of Bohemia, 10th century.

* Vladivoj succeeds Boleslaus III, Duke of Bohemia.

* February 7 – Boleslaus II, Duke of Bohemia

* Boleslaus I becomes Duke of Poland.

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

One of the Empress's greatest achievements was her success in maintaining German supremacy over Bohemia, as Duke Boleslaus II of Bohemia was forced to accept the authority of Otto III.

When Wenceslaus I was assassinated in 935, his brother Boleslaus I succeeded him as Duke and refused to continue paying the annual tribute to Germany.

He died in 972 and was succeeded as Duke by his oldest son Boleslaus II.

After initially siding with Duke Henry II of Bavaria against Emperor Otto II during Henry's failed revolt in 977, Boleslaus II swore loyalty to Otto II.

One of the plates had already been broken by that time with only part of the inscription preserved: Liste est glaud ... h Bolezlai Duc ... (" This is a sword of ... Duke Boleslaus ..."); the inscription on the other plate continued: Cum quo ei Dn SOS Omnipotens Salvator auxiletur adsus partes amen (" With whom is the Omnipotent Lord and Savior, to help him against his enemies.

The full inscription read: Iste est gladius Principis et haeredis Boleslai Ducis Poloniae et Masoviae, Lanciciae (" This is a sword of Hereditary Prince Boleslaus, Duke of Poland, Masovia, and Łęczyca ").

The identity of this Duke Boleslaus is uncertain.

* Duke Boleslaus III of Bohemia

He and his advisor, Bishop Abraham of Freising, conspired with the Duke of Poland Mieszko I and the Duke of Bohemia Boleslaus II against Otto II in 974.

Henry II event went so far as to claim the German throne outright, obtaining the allegiance of Mieszko I of Poland and Boleslaus II, Duke of Bohemia.

* April 14 – Duke Boleslaus of Greater Poland

war: Boleslaus I, Duke han Bohemia

The first written mention of Chełmno is known from a document allegedly issued in 1065 by Duke Boleslaus II of Poland for the Benedictine monastery in Mogilno.

She was a daughter of Boleslaus of Greater Poland and Jolenta of Hungary.

* Boleslaus III Wrymouth, king of Poland

* Boleslaus I of Poland

* Ladislaus Herman succeeds Boleslaus II in Poland.

* February 9 – Boleslaus III of Bohemia is restored to authority with armed support from Bolesław I the Brave of Poland.

* Boleslaus I of Poland becomes duke of Bohemia and Moravia.

* Boleslaus I of Poland loses Bohemia after having become duke the previous year.

* Silesia is incorporated into territory ruled by Boleslaus I of Poland.

* Casimir II of Poland succeeds Boleslaus IV of Poland on the throne.

* June 21 – King Boleslaus V of Poland ( d. 1279 )

* Boleslaus II takes office as duke of Poland.

* Boleslaus I of Poland takes Kiev and conquers Red Ruthenia.

* 1264 – King Boleslaus V of Poland promulgates legal protection for his Jewish subjects, including protection from the kidnapping and forcible baptism of Jewish children.

Mieszko I, then a pagan, would married Boleslaus I's Christian daughter Dobrawa in 965, and would convert to Christianity in 966, bringing Poland closer to the Christian states of Bohemia and the Empire.

To strengthen the Bohemian-Polish alliance, Boleslaus I's daughter Dobrawa was married to the pagan Mieszko I of Poland in 965.

* Saint Adalbert of Prague is sent to Prussia by Boleslaus I of Poland.

* Boleslaus III of Poland ( b. 1086 )

* King Boleslaus III the Wrymouth of Poland