Johann Georg von Brandenburg

Johann Georg [John George] von Brandenburg (16 December 1577 – 2 March 1624) was a German nobleman and Protestant ecclesiastic in the Holy Roman Empire. He was the administrator (bishop) of Strasbourg from 1592 until 1604 and the Duke of Jägerndorf (Krnov), one of the Silesian duchies, from 1607 until 1624.

Born at Wolmirstedt, Johann Georg was the second son of Elector Joachim Friedrich of Brandenburg and Katharina von Brandenburg-Küstrin. Like all male members of his family, he held the title Margrave of Brandenburg as a courtesy title. With his brother Johann Sigismund, he was sent to study at the University of Strasbourg in 1588. There the brothers, both Lutherans, came under the influence of Calvinist teaching.

Following the death of Bishop Johann von Manderscheid, the Protestant majority in the chapter of the diocese of Strasbourg elected the 15-year-old Johann Georg to administer the diocese on 20 May 1592. This decision was designed to unite Protestants across Germany behind them. The Catholic minority elected Cardinal Charles of Lorraine in opposition to Johann. There followed twelve years' of war in Strasbourg. It was finally ended by the Treaty of Haguenau of 22 November 1604. Johann ceded the diocese to Charles and received compensation in return.

In 1607, Johann Georg's father granted him the Duchy of Jägerndorf, which had belonged to the late Georg Friedrich of Ansbach. The Emperor Rudolf II, in whose Kingdom of Bohemia the Duchy of Jägerndorf lay, refused to admit Johann as duke and asked for Beuthen and Oderberg as pledges. His successors, Matthias and Ferdinand II, however, took the oath of fealty from Johann in 1611 and 1617. A dispute over the pledges was not settled until 17 May 1618, and on that date Johann's possession of Jägerndorf became final.

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