* 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 the Pious, Duke of Greater Poland ( d. 1279 )

* 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.

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 )

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

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

* Boleslaus II takes office as duke of Poland.

* April 7 – Boleslaus George II of Halych ( b. 1308 ), duke of Masovia

Boleslaus I the Cruel, also called Boleslav I () ( – 15 July, 967 or 972 ), was the ruler ( kníže, literally " prince ," but usually translated as " duke ") of Bohemia from 935 to his death.

In 1003, Boleslaw I conquered the Duchy of Bohemia, imprisoned its Přemyslid duke, Boleslaus III, and denied Henry II the oath of allegiance for the duchy.

The first historical mention of Davle is the founding of benedictine monastery of st. John the Baptist by Bohemian duke Boleslaus II in 999.

Drahomíra ( 877 / 90-died after 935 ) was a Bohemian duchess consort, wife of duke Vratislav I of Bohemia and mother of Saint Wenceslas and Boleslaus I of Bohemia.

* April 14 – Duke Boleslaus of Greater Poland

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.

* 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 I becomes 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.

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

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.

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 ").

* 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

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.