Wilhelm Kettler

Wilhelm Kettler
Duke of Courland and Semigallia
Duke of Courland
Reign1587–1617
PredecessorGotthard Kettler
SuccessorFriedrich Kettler
Born20 June 1574
Mitau, Duchy of Courland and Semigallia
Died7 April 1640(1640-04-07) (aged 65)
Kucklow, Duchy of Pomerania
Burial
Ducal crypt in the Jelgava Palace
Spouse
(m. 1609; died 1610)
IssueJacob, Duke of Courland
HouseKettler
FatherGotthard Kettler
MotherAnna of Mecklenburg
ReligionLutheranism

Wilhelm Kettler (20 June 1574 – 7 April 1640) was the Duke of Courland, a Baltic German region in today's Latvia. Wilhelm ruled the western Courland portion of the Duchy of Courland and Semigallia, while his brother Friedrich ruled the eastern Semigallia portion.