Johann Georg succeeded his father as Elector when he died, on 12 September 1691.
At the beginning of his reign his chief adviser was Hans Adam von Schöning, who counselled a unio
n between Saxony and Brandenburg and a more independent attitude towards the emperor. In accordance with this advice certain proposals were put before Leopold I to which he refused to agree; and conse
quently the Saxon troops withdrew from the imperial army, a proceeding which led the chagrined emperor to seize and imprison Schöning in July 1692. Although Johann Georg was unable to procure his min
ister's release, Leopold managed to allay the elector's anger, and early in 1693 the Saxon soldiers rejoined the imperialists.
In Leipzig on 17 April 1692, John George married Eleono
re Erdmuthe of Saxe-Eisenach, Dowager Margravine of Brandenburg-Ansbach. The young Elector was forced to marry by his mother, the Dowager Electress Anna Sophie, supposedly to produce legitimate heirs
to the Electorate. The real reason for the marriage was to end the liaison between John George and Magdalena Sibylla of Neidschutz.
John George III, the late Elector had tried to sep
arate the lovers, perhaps because he was aware of a close blood relationship between them — for Magdalena Sybilla may have been his own illegitimate daughter by Ursula Margarethe of Haugwitz, and th
erefore John George IV's half-sister. By order of the Elector, Ursula had married Colonel Rudolf of Neidschutz, who officially appears as the father of her daughter.
John George may
never have known of his possible blood relationship to Magdalena Sibylla or regarded the claim as a rumor spread by ill-wishers. Immediately after he assumed the Electorate, he openly lived with her,
and she became the first ever Official Mistress (Favoritin) of an Elector of Saxony.
The Electress, Eleonore Erdmuthe, humiliated every day since her wedding, was relegated to the Ho
fe (the official residence of the Elector). John George moved into another palace with Magdalena Sybilla.
Desperate to marry his mistress, Johann Georg tried to murder his wife, but
was prevented by his younger brother, Frederick August. When Johann Georg tried to stab Eleonore with a sword, the unarmed Frederick turned the impact away with his hand, leaving him with a lifelong h
andicap.
After a high bribery sum from the Elector, on 20 February 1693 Magdalene Sybille was created Countess of Rochlitz (Grafïn von Rochlitz) by Imperial Decree. Shortly before,
she gave birth the only daughter of the couple, Wilhelmina Maria. Despite her illegitimacy, the English King and Queen were her godparents.
But the happiness ended soon: Magdalene Sy
bille contracted smallpox and died on 4 April 1694, in the arms of the Elector, who was also infected with the disease.
Johann Georg died twenty-three days later, on 27 April. He was
buried in the Freiberg Cathedral.
Because he died without legitimate issue -the Electress Eleonore suffered two miscarriages during their marriage, in August 1692 and February 1693-, h
e was succeeded as Elector by his brother Frederick Augustus I (king of Poland as Augustus II of Poland). The new Elector took the guardianship of the little orphan Wilhelmina Maria, who was raised in
the court. He recognized the girl as his niece and gave her a dowry when she was married to a Polish Count.
1668 - 1694 (25 år)
