Boleslaus

If Szczerbiec had previously belonged to his uncle, Boleslaus I of Masovia, or his father-in-law, Boleslaus the Pious, then he could have inherited it.

According to this source, the sword was given to King Boleslaus the Brave (reigned 992–1025) by an angel; Polish kings were supposed to always carry it in battle to triumph over their enemies.

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

Boleslaus I agreed to resume paying tribute and to recognize Otto I as his overlord.

Comyn, pg. 117 When Otto II died suddenly in 983 and was succeeded by the three-year old Otto III, Boleslaus II again supported Henry II in his bid for the German throne.

His family refused to support Duke Boleslaus in an unsuccessful war against Poland.

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.

Otto II then brought the rebels before the Imperial Diet in Quedlinburg on March 31, 978. Boleslaus II was treated with honors and swore loyalty to Otto II.

The identity of this Duke Boleslaus is uncertain.sfn : 76 Use-wear analysis indicates that the plates on the pommel and the crossguard were made by the same artist, while the plates on the grip were added later.

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

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.