Duchess Alexandra of Oldenburg Grand Duchess of Russia (1838–1900) (1838–1900) Parents Princess Therese of Nassau Duke Peter of Oldenburg Children Grand Duke Peter Nikolaevich of Russia Grand Duke Nicholas Nikolaevich of Russia Siblings Duke Constantine Petrovich of Oldenburg Ekaterina Petrovna of Oldenburg Duke Alexander Petrovich of Oldenburg Duchess Therese Petrovna of Oldenburg Georg Friedrich Alexander von Holstein-Gottorp, Herzog von Oldenburg Duke Nikolaus of Oldenburg Marie Friederike Cäcilie of Oldenburg Partners Grand Duke Nicholas Nikolaevich of Russia
