Duchy of Courland and Semigallia (1918)

The Duchy of Courland and Semigallia was the name for a proposed client state of the German Empire during World War I which did not come into existence. It was proclaimed on 8 March 1918, in the German-occupied Courland Governorate by a council composed of Baltic Germans, who offered the crown of the once-autonomous duchy to Kaiser Wilhelm II, despite the existence of a formerly sovereign reigning family in that duchy, the Biron descendants of Ernst Johann von Biron. Although the German Reichstag supported national self-determination for the peoples of the Baltic provinces (what is now Latvia and Estonia), the German High Command continued the policy of attaching these territories to the German Reich by relying on the local Baltic Germans.

In October 1918, the Chancellor of Germany, Prince Maximilian of Baden, proposed to have the military administration in the Baltic replaced by civilian authority. After the German Revolution on 18 November 1918, Latvia proclaimed independence and on 7 December, the German military handed over authority to the Latvian national government headed by Kārlis Ulmanis.