Grand Duchess Maria Pavlovna of Russia
On 26 May 1827 in Charlottenburg, Charles married Princess Marie of Saxe-Weimar-Eisenach, a daughter of Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach and his wife Grand Duchess Maria Pavlovna of Russia. Two years later, in 1829, Marie's younger sister Augusta would marry Charles' older brother, Wilhelm, the future Kaiser.