Question: When did Konstantine Bagration Of Mukhrani (1889–1915)'s wife die?
Sentence (from "Konstantine Bagration of Mukhrani (1889–1915)"): A member of the Russian Imperial Guard, Konstantine fought with distinction and died in World War I - actions for which he posthumously received the Order of St. George, the highest military decoration of the Empire.
Relevant evidence: No