Question: When did Grand Duchess Elena Vladimirovna Of Russia's mother die?
Sentence (from "Grand Duchess Maria Vladimirovna of Russia"): Grand Duchess Maria Vladimirovna of Russia (born 23 December 1953 in Madrid) has been a claimant to the headship of the Imperial Family of Russia (who reigned as Emperors and Autocrats of All the Russias from 1613 to 1917) since 1992.
Relevant evidence: No