Gotthard Kettler, Duke of Courland was the last Master of the Livonian Order from 1559 to 1561 and the first Duke of Courland and Semigallia from 1561 to 1587.
- Occupation
- politician
- Position held
- Duke of Courland and Semigallia
- Born
- February 2, 1517
- Died
- May 17, 1587