The American Cyclopædia (1879)/Charles I. (Würtemberg)
CHARLES I. (Karl Friedrich Alexander), born March 6, 1823. He married July 13, 1846, the Russian grand duchess Olga, daughter of the emperor Nicholas, and a sister of the present czar. He succeeded to the throne June 25, 1864, on the death of his father William I. He sided with Austria in the German war of 1866, but after the battle of Sadowa concluded a secret military treaty with Prussia, and took part on her side in the Franco-German war of 1870-'71, joining the new German empire at the close of 1870.