Saxe-Weimar [SEP] dissolved or abolished
Battle of Jena-Auerstedt was forced to accede the Napoleonic Confederation of the Rhine in 1806. In 1809 Saxe-Weimar and Saxe-Eisenach, which had been united only in the person of the duke, were formally merged into the Duchy of Saxe-Weimar-Eisenach.
Dukes of Saxe-Weimar.
- Johann Wilhelm (1554–73)
- Frederick William I (1573–1602), son of Johann Wilhelm
- Johann II (1602–05), brother
- Johann Ernest I (1605–20), son of
Albert IV, thereby (re-)establishing the Duchies of Saxe-Gotha and short-lived Saxe-Eisenach, which was again dissolved upon Duke Albert's death in 1644.
Another rearrangement of the Ernestine lands took place in 1672 after Duke Frederick William III of Saxe-Altenburg, descendant of Duke John Phillip, had died without heirs and his cousin Duke Johann Ernst II of Saxe-Weimar inherited parts of his duchy, which originally had been split off the Saxe-Weimar territory in 1602. Johann Ernst II immediately divided the