Frederick Casimir Kettler

Friedrich Casimir Kettler
Portrait by an unknown Swedish painter, 18th century
Duke of Courland and Semigallia
Reign1 January 1682– 22 January 1698
PredecessorJacob Kettler
SuccessorFrederick Wilhelm Kettler
Born(1650-07-06)6 July 1650
Mitau
Died22 January 1698(1698-01-22) (aged 47)
Mitau
Burial
Ducal crypt in Schloss Mitau.
SpouseSophie Amalie of Nassau-Siegen
Elisabeth Sophie of Brandenburg
IssueFrederick Wilhelm Kettler
HouseHouse of Kettler
FatherJacob Kettler
MotherLouise Charlotte of Brandenburg
ReligionLutheranism

Frederick Casimir Kettler (German: Friedrich Casimir Kettler; 6 July 1650 – 22 January 1698) was Duke of Courland and Semigallia from 1682 to 1698. Frederick Casimir was the son of Jacob Kettler and Louise Charlotte of Brandenburg. In his reign the Duchy lost its geopolitical position and became Sweden, Prussia and Russia's territorial subject of interests.