1675, Duke of Saxony GothaErnst IDeath.His fourth son, Friedrich I, the oldest son who lived to adulthood, inherited his territory.But other sons objected.In 1680, Friedrich I divided his father's territory with six younger brothers by agreement.The eleventh son of Ernst I, John Ernst IV, receivedSalfeld, Gryfental and Probszera, known as the Duke of Saxony Salfeld.
In 1699, Saxony Coburg lost his heir, and John Ernst got Coburg, becoming Duke of Saxony Coburg and Duke of Saxony Salfeld.
In 1735, Christian Ernst II, the eldest son of John Ernst, merged Saxen Coburg and Saxen Salfeld into Saxen Coburg Salfeld.
Franz Josias
Between 1729 and 1745, John Ernst's two sons ruled two regions of the Principality respectively, and the eldest son Christian Ernst ruledSalfeld, Ruled by the fourth son Franz JosiasCoburg。From 1735, they became co rulers.The death of Christian Ernst in 1745 determined thePrimogeniture。
In 1825, Friedrich IV, Duke of Saxony Gotha Altenberg, died without children, and Saxony Gotha Altenberg had no children.The succession of Saxony Gotha Altenberg is a dispute among the states of the Enstine family.Through the King of SaxonyFriedrich Auguste IIt was decided by the arbitration that Ernst I, Duke of Saxon Coburg Salfeld, the niece of Friedrich IV, was granted Gotha;Saxon Hildeburghausen gotAltenburgAnd cede Hildeburghausen toSaxony Menningen。Saxen Coburg Salfeld who obtained Gotha was renamed Saxen Coburg Gotha;And Saxon Hildeburghausen changed his nameSaxony Altenburg。
