Kurš apprecējās ar Agnes of Hesse?

Agnes of Hesse (31 May 1527 – 4 November 1555) was a princess of Hesse by birth and by marriage Electress of Saxony.

Maurice (German: Moritz; 21 March 1521 – 9 July 1553) was Duke of Saxony from 1541 to 1553, who became Prince-Elector and Arch-Marshal of the Holy Roman Empire in 1547. Through shrewd political maneuvering, skillfully exploiting alliances and rivalries, he secured extensive territories and the electoral title for the Albertine branch of the Wettin dynasty.

Maurice succeeded his father as duke of Saxony in 1541. Though a Protestant, he initially backed Emperor Charles V in several wars, then in 1545 accepted the Emperor's promise of the Saxon electorship and turned against the rival Ernestine branch—helping seize Electoral Saxony. After John Frederick's defeat at Mühlberg (1547), Maurice was rewarded with the electoral title and large new lands.

He soon broke with Charles, angered by plans to restore Catholicism in Protestant territories and by the continued imprisonment of his father-in-law, Philip I of Hesse. Although sent to subdue Magdeburg in 1550, Maurice used the mission to raise an army and forge alliances with France and Protestant princes. In 1552, their campaign forced the Emperor to flee and Philip to be released, and the Treaty of Passau (1552) temporarily safeguarded Lutheran interests. Maurice later returned to the imperial side, but was killed in 1553 after defeating Albert Alcibiades at the Battle of Sievershausen.

John Frederick II of Saxony (German: Johann Friedrich II. von Sachsen; 8 January 1529 – 19 May 1595), was a prince of the Ernestine line of the House of Wettin. Although he nominally bore the title of Duke of Saxony, he in fact ruled the Saxon duchies of Coburg and Eisenach.