Under Duke Albert, the expansion of his baroque residence in Coburg began.
 He based his life on the customs of his royal and princely contemporaries and tried to imitate their households on a smaller scale in Coburg.
 His court library consisted of 4,757 volumes.
 His plans to raise the Gymnasium Casimirianum to the rank of university failed because of the tight finances.
 The reconstruction of the Schloss Ehrenburg, burned in 1690, in the Baroque style eventually led to the ruin of the finances of the Principality, which could not be prevented by the minting of inferior coins.
 The Baroque Prince, Duke Albert, died in 1699 without any surviving descendants.
 This was followed by the usual inheritance disputes.
 Saxe-Hildburghausen got the District of Sonnefeld in 1707.
 Between Bernhard I of Saxe-Meiningen and his youngest brother John Ernest IV of Saxe-Saalfeld, strife lasted for thirty-five years, ending only in 1735 with several interventions from the Holy Roman Emperor, Charles VI, in Vienna.
 Saxe-Meiningen received the District of Neuhaus am Rennweg  and the jurisdiction of Sonneberg while Saxe-Saalfeld was united with the remaining territories of Saxe-Coburg to become Saxe-Coburg-Saalfeld.
 In 1753, it grew with the one-third of the Duchy of Saxe-Römhild, which had expired with the death of its only Duke, the childless Henry, Duke of Saxe-Römhild.
Under Duke Albert, the expansion of his baroque residence in Coburg began.  He based his life on the customs of his royal and princely contemporaries and tried to imitate their households on a smaller scale in Coburg.  His court library consisted of 4,757 volumes.  His plans to raise the Gymnasium Casimirianum to the rank of university failed because of the tight finances.  The reconstruction of the Schloss Ehrenburg, burned in 1690, in the Baroque style eventually led to the ruin of the finances of the Principality, which could not be prevented by the minting of inferior coins.  The Baroque Prince, Duke Albert, died in 1699 without any surviving descendants.  This was followed by the usual inheritance disputes.  Saxe-Hildburghausen got the District of Sonnefeld in 1707.  Between Bernhard I of Saxe-Meiningen and his youngest brother John Ernest IV of Saxe-Saalfeld, strife lasted for thirty-five years, ending only in 1735 with several interventions from the Holy Roman Emperor, Charles VI, in Vienna.  Saxe-Meiningen received the District of Neuhaus am Rennweg  and the jurisdiction of Sonneberg while Saxe-Saalfeld was united with the remaining territories of Saxe-Coburg to become Saxe-Coburg-Saalfeld.  In 1753, it grew with the one-third of the Duchy of Saxe-Römhild, which had expired with the death of its only Duke, the childless Henry, Duke of Saxe-Römhild.
Saxe-Coburg