Prince Jan of the Piast Dynasty (1370-August 27, 1428) was Duke of Ziebice. The Piast dynasty is a line of Kings and dukes that ruled Poland from its beginnings as an independent state up to 1370. ... Events Beginning of the rule of Poland by Capet-Anjou family. ... August 27 is the 239th day of the year in the Gregorian Calendar (240th in leap years), with 126 days remaining. ... // Events October 12 - English forces under Thomas Montacute, 4th Earl of Salisbury besiege Orléans. ... Ziębice is a town on the Oława River in the Lower Silesian Voivodship, Poland. ...

Jan was son of Prince Boleslaw III and Princess Eufemia.

He was married to Elizabeth Lackovic since 1403/1406. Elizabeth Lackovic (?-December 27, 1428) was a Croatian-Hungarian noble lady of the Lackovic family. ... Events July 21 - Battle of Shrewsbury. ... Events Construction of Forbidden City begins in Beijing. ...