Johann Martin Lappenberg was a German diplomat, groundbreaking medievalist, and historian with a focus on the early Holy Roman Empire, the Hanseatic League, and Saxon England.
- Occupation
- regional historian, archivist, historian, writer
- Position held
- Member of the Frankfurt Parliament
- Citizenship
- Germany
- Born
- July 30, 1794
- Died
- November 28, 1865
