Question: When did Grand Duke Vyacheslav Konstantinovich Of Russia's mother die?
Sentence (from "Princess Alexandra of Saxe-Altenburg"): Grand Duchess Alexandra Iosifovna of Russia (8 July 1830 – 6 July 1911), born Princess Alexandra Friederike Henriette of Saxe-Altenburg, was the fifth daughter of Joseph, Duke of Saxe-Altenburg and Amelie Theresa Luise, Duchess of Württemberg.
Relevant evidence: Yes