Saxe-Coburg-Saalfeld

Saxe-Coburg-Saalfeld () was one of the Saxon Duchies held by the Ernestine line of the House of Wettin. Established in 1699, the Saxe-Coburg-Saalfield line lasted until the reshuffle of the Ernestine territories that occurred following the extinction of the Saxe-Gotha line in 1825, in which the Saxe-Coburg-Saalfeld line received Gotha, but lost Saalfeld to Saxe-Meiningen.

==Saxe-Saalfeld 1680 to 1735== left|thumb|Schloss Saalfeld, built after 1677 as the ducal residence After the Duke of Saxe-Gotha, Ernest the Pious, died on 26 March 1675 in Gotha, the Principality was divided on 24 February 1680 among his seven surviving sons. The lands of Saxe-Saalfeld went to the youngest of them, who became John Ernest IV (1658–1729), the Duke of Saxe-Saalfeld. But the new Principality did not have complete independence. It had to depend on the higher authorities in Gotha for the matters of administration of its three districts, Saalfeld, Grafenthal and Probstzella – the so-called "Nexus Gothanus" – because that was the residence of John Ernest's oldest brother, who ruled as Frederick I, Duke of Saxe-Gotha-Altenburg. Saalfeld was the residence of the Dukes of Saxe-Saalfeld from 1680 to 1735.