The House of Saxe-Lauenburg is a historical German noble family that originated in the region of Lauenburg. It was established in the 12th century and became a significant branch of the larger House of Wettin. The family played a crucial role in the politics of northern Germany, particularly during the Middle Ages. Members of the House of Saxe-Lauenburg held various titles, including dukes and princes, and were involved in numerous territorial disputes. The house eventually lost its prominence, with its last ruling duke, Francis II, abdicating in the early 19th century. Today, the family is primarily known for its historical significance rather than political power.