(1) He is married to Frederike Caroline Louise van Hessen-Darmstadt.
They got married on September 18, 1768 at Darmstadt, Hessen , he was 26 years old.
Child(ren):
(2) He is married to Charlotte Wilhelmina Christine Maria van Hessen-Darmstadt.
They got married on September 28, 1784 at Darmstadt, Hessen , he was 42 years old.
Child(ren):
Duc de Mecklembourg-Strelitz (4de, 2 juni 1794 - 28 juni 1815),
Prince de Wenden, de Schwerin en de Ratzebourg (2 juni 1794 - 6 november 1816),
Comte de Schwerin (2 juni 1794 - 6 november 1816),
Seigneur des pays de Rostock et Stargard (2 juni 1794 - 6 november 1816),
Grand-duc de Mecklembourg-Strelitz (1ste, 28 juni 1815 - 6 november 1816)
Bron: http://de.wikipedia.org/wiki/Karl_II._(Mecklenburg)
The data shown has no sources.