Frederick William, Duke of Brunswick-Wolfenbüttel, was a German prince and Duke of Brunswick-Lüneburg and Oels. Nicknamed "The Black Duke", he was a military officer who led the Black Brunswickers against French domination in Germany. He briefly ruled the state of Brunswick-Wolfenbüttel from 1806 to 1807 and again from 1813 to 1815. He was killed during the Battle of Quatre Bras, during the Waterloo campaign.
- Occupation
- military officer
- Citizenship
- Duchy of Brunswick
- Born
- October 9, 1771
- Died
