Ehevertrag des Großfürsten Konstantin von Rußland und der Prinzessin Alexandra von Sachsen-Altenburg vom 30. Januar/11. Februar 1840

History of loss: At the request of the archive department of the Soviet Military Administration (SMA), in 1946 all archive records relating to relations between the former individual states and Russia, Poland and Courland had to be handed over to the Soviet Military Administration (SMA) in Berlin (letter dated 22 April 1999).