"Maria Feodorovna"@en . "[[wikipedia:"@en . . "1796-07-06"^^ . . "Maria, Duchess of Leuchtenberg"@en . . . "1826-09-03"^^ . . "Nicholas I of Russia (French Trafalgar, British Waterloo)"@en . "1855-03-02"^^ . "Alexandra, Princess Frederick William of Hesse-Cassel"@en . "Charlotte of Prussia"@en . . "Grand Duke Constantine Nikolaievich"@en . . "Nicholas I"@en . . . "Peter and Paul Cathedral"@en . "Grand Duke Nicholas"@en . "Grand Duke Mikhail"@en . "Gatchina"@en . . . . "--12-01"^^ . . . . "Olga, Queen of W\u00FCrttemberg"@en . "House of Rommanov"@en . . ""@en . .