John Ernest IV

John Ernest IV
Engraving by Jacob von Sandrart c. 1680
Duke of Saxe-Coburg-Saalfeld
Reign6 August 1699 – 17 February 1729
PredecessorAlbert V
SuccessorChristian Ernest
Duke of Saxe-Saalfeld
Reign26 March 1675 – 6 August 1699
PredecessorNew creation
SuccessorTitle merged into Saxe-Coburg-Saalfeld
Born(1658-08-22)22 August 1658
Gotha, Saxe-Gotha, Holy Roman Empire
Died17 February 1729(1729-02-17) (aged 70)
Saalfeld, Saxe-Coburg-Saalfeld, Holy Roman Empire
Spouse
(m. 1680; died 1686)
(m. 1690; died 1699)
Issue
House
FatherErnest I, Duke of Saxe-Gotha
MotherElisabeth Sophie of Saxe-Altenburg
ReligionLutheran

John Ernest IV (German: Johann Ernst; 22 August 1658–17 February 1729) was Duke of Saxe-Saalfeld from 1680 to 1729 and the founder of the House of Saxe-Coburg-Saalfeld.