Mieszko Mieszkowic Mieszko Mieszkowic Mieszko Mieszkowic (979/984 – aft. 992/95), was a Polish prince, and a member of the House of Piast. He was the second son of Mieszko I of Poland, but eldest born from Mieszko's second marriage to Oda, daughter of Dietrich of Haldensleben, Margrave of the North March. Little is known about his first years of life. Mieszko's first appearance is in the document ""Dagome iudex"" (ca. 991/92), along with his parents and brother Lambert. The purpose of the document was to protect Mieszko's and Lambert's inheritance from their older half-brother Bolesław I the Brave, who isn't named there.
Mieszko I, Duke of Cieszyn was on 1 January 1290. In internal politics he pursued vigorous policies. Mieszko carried out intensive colonizing policies and founded many settlements. He also gave city rights to several towns: Cieszyn, Oświęcim (in 1291), Bielsko, Skoczów and Fryštát. On 10 November 1292 he granted the city rights to Zator. Mieszko refused to support any of the Piast pretenders to the Polish throne (Henry IV Probus, Przemysł II and Władysław I the Elbow-high). Instead he stood alongside King Wenceslaus II of Bohemia. On 17 January 1291 the formal agreement was signed in Olomouc which formed the alliance between the Bohemian Kingdom,