Saxe-Lauenburg

Duchy of Saxe-Lauenburg
Herzogtum Sachsen-Lauenburg (German)
  • 1296–1803
  • 1814–1876
Flag of the 19th century
Coat of arms (1507–1671)
Attributed arms of the Saxe-Lauenburg
The Saxon Steed
The Duchy of Saxe-Lauenburg in 1848 (map in Dutch)
Status
CapitalLauenburg/Elbe
Ratzeburg (from 1619)
Religion
Earlier: Roman Catholic
Later: Lutheran
GovernmentDuchy
Duke 
 1296–1303
Eric I (first)
 1865–1876
William (last)
Historical eraMiddle Ages
 Partitioned from Duchy of Saxony
1296
 Partitioned into Saxe-Mölln-Bergedorf and Saxe-Ratzeburg
1303–1401
1689–1705
 Personal union with Hanover
1705–1803
 Dissolved during Napoleonic Wars
1803–1814
 Personal union with Denmark
1814–1864
 Personal union with Prussia
1865–1876
 Merged into Prussia
1876
Preceded by
Succeeded by
Duchy of Saxony
Province of Schleswig-Holstein
Today part of Germany

The Duchy of Saxe-Lauenburg (German: Herzogtum Sachsen-Lauenburg, Danish: Hertugdømmet Sachsen-Lauenborg), was a reichsfrei duchy that existed from 1296 to 1803 and again from 1814 to 1876 in the extreme southeast region of what is now Schleswig-Holstein. Its territorial centre was in the modern district of Herzogtum Lauenburg and originally its eponymous capital was Lauenburg upon Elbe, though the capital moved to Ratzeburg in 1619.