Answer
Nicholas I, the Emperor of Russia from 1825 to 1855, had a large family. He fathered 11 children, including seven sons and four daughters. His sons were Alexander II, Konstantin Nikolaevich, Nikolai Nikolaevich, Mikhail Nikolaevich, Nikolai Nikolaevich the Younger, Mikhail Nikolaevich the Younger, and Sergei Alexandrovich. His daughters were Maria Nikolaevna, Olga Nikolaevna, Alexandra Nikolaevna, and Ekaterina Nikolaevna.