On 26 May 1555, Agnes married her second husband, Duke John Frederick II of Saxony.
Albert II, Duke of Saxe-Wittenberg (1250–1298), first duke of Saxe-Wittenberg after its definite division from the Duchy of Saxony in 1296
Elizabeth of the Palatinate (born: 30 June 1540 in Birkenfeld; died: 8 February 1594 in Wiener Neustadt) was the second wife of Duke John Frederick II of Saxony.
He came from a peasant family and experienced a youth shaped by military turmoil during the Smalcaldic War, with the siege of Gotha by the Elector Augustus of Saxony.
He participated in the siege of Gotha, which was necessary to arrest the deposed Duke John Frederick II of Saxe-Coburg-Eisenach, who had been banned for failure to deliver Wilhelm von Grumbach at the Emperor's demand.
In 1554, after the death of his father, John William inherited the duchy of Saxony with his older brother, John Frederick II, and his younger brother, John Frederick III.
1558 Duke John Frederick II of Saxony (1529–1595)
Otto von Pack (c. 1480 – 8 February 1537), German conspirator, studied at the University of Leipzig, and obtained a responsible position under George, Duke of Saxony, which he lost owing to his dishonesty.
He became the personal physician of John Frederick II, Duke of Saxony, remaining at Gotha until the surrender of the city on 13 April 1567.
In June 1560, he participated in a disputation with Saxon Lutherans from the court of John Frederick II on the Lord’s Supper, chiefly against Johann Stössel.
Duke Jan II the Mad had his older brother Balthasar imprisoned and starved to death at the castle's tower in 1472, shortly before he sold his duchy to Duke Albert III of Saxony.
The duchy was created by the Division of Erfurt in 1572 which implemented a decision of the Diet of Speyer in 1570 to separate Coburg and Eisenach from the Duchy of Saxe-Weimar and give them to John Casimir and John Ernest, the two sons of John Frederick II.
Upon his death in 1554, his son John Frederick II succeeded him as "Duke of Saxony", residing at Gotha.
John Frederick II, Duke of Saxony (b. Torgau, 8 January 1529 – d. as imperial prisoner at Schloss Steyr, Upper Austria, 19 May 1595);
Meanwhile he had found a new patron in the Wettin duke John Frederick II of Saxony, whose father, John Frederick I had been obliged by the 1547 Capitulation of Wittenberg to surrender the electoral dignity to the Albertine cadet branch of his family.
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This daughter, Richenza (d. 1141) married Lothar of Süpplingenburg, who was Duke of Saxony and later became Holy Roman Emperor.
He was Duke, Prince-Elector of Saxony and Arch-Reichsmarschall of the Holy Roman Empire of the German Nation from 1298 until his death.