The Duchy of Saxe-Coburg-Saalfeld was one of the Saxon Duchies

Ernestine duchies

The Ernestine duchies, also called the Saxon duchies , were a changing number of small states largely located in the present German state of Thuringia, governed by dukes of the Ernestine line of the House of Wettin.-Overview:The...

 held by the Ernestine line of the Wettin

Wettin

Wettin is:*House of Wettin, a German Royal House*Wettin Castle, near Halle, Saxony-Anhalt, Germany, ancestral seat of the House of Wettin*Asteroid 90709 Wettin, named in the castle's and House's honour...

 Dynasty. Established in the 17th century, the Saxe-Coburg-Saalfield line lasted until the reshuffle of Ernestine territories that occurred following the extinction of the Saxe-Gotha

Saxe-Gotha

Saxe-Gotha was one of the Saxon duchies held by the Ernestine of the Wettin dynasty in the former Landgraviate of Thuringia. The ducal residence was erected at Gotha....

 line in 1825, in which the Saxe-Coburg-Saalfeld line received Gotha

Gotha (town)

Gotha is a town in Thuringia, within the central core of Germany. It is the capital of the district of Gotha.- History :The town has existed at least since the 8th century, when it was mentioned in a document signed by Charlemagne as Villa Gotaha . Its importance derives from having been chosen in...

, but lost Saalfeld to Saxe-Meiningen

Saxe-Meiningen

The Duchy of Saxe-Meiningen was one of the Saxon duchies held by the Ernestine line of the Wettin dynasty, located in the southwest of the present-day German state of Thuringia....

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Dukes of Saxe-Coburg-Saalfeld

• Johann Ernst
  Johann Ernst, Duke of Saxe-Coburg-Saalfeld
  John Ernest, Duke of Saxe-Coburg-Saalfeld was a duke of Saxe-Coburg-Saalfeld.He was the tenth but seventh surviving son of Ernest I, Duke of Saxe-Gotha and Elisabeth Sophie of Saxe-Altenburg....
  
   (1675–1729)
• Christian Ernst
  Christian Ernst II, Duke of Saxe-Coburg-Saalfeld
  Christian Ernst II, Duke of Saxe-Coburg-Saalfeld , was a duke of Saxe-Coburg-Saalfeld....
  
   (1729–1745)
• Franz Josias
  Franz Josias, Duke of Saxe-Coburg-Saalfeld
  Franz Josias, Duke of Saxe-Coburg-Saalfeld was a duke of Saxe-Coburg-Saalfeld.He was the fourth living son of John Ernest IV, Duke of Saxe-Coburg-Saalfeld, the third born by his father's second wife Charlotte Johanne of Waldeck-Pyrmont.During his youth, Francis Josias served in the Imperial...
  
   (1745–64)
• Ernst Frederick
  Ernst Frederick, Duke of Saxe-Coburg-Saalfeld
  Ernest Frederick, Duke of Saxe-Coburg-Saalfeld , was a Duke of Saxe-Coburg-Saalfeld.He was the eldest son of Francis Josias, Duke of Saxe-Coburg-Saalfeld and Anna Sophie of Schwarzburg-Rudolstadt....
  
   (1764–1800)
• Franz Frederick
  Franz Frederick Anton, Duke of Saxe-Coburg-Saalfeld
  Franz Frederick Anton, Duke of Saxe-Coburg-Saalfeld , was a duke of Saxe-Coburg-Saalfeld. He is a patrilineal ancestor of Elizabeth II, Albert II of Belgium and Simeon B...
  
   (1800–06)
• Ernst Anton Karl Ludwig (1806–25)