Question: What is the date of death of Princess Tatiana Constantinovna Of Russia's mother?
Sentence (from "Princess Tatiana Constantinovna of Russia"): Princess Tatiana Konstantinovna (not to be confused with her cousin, Grand Duchess Tatiana Nikolayevna, second daughter of Nicholas II, 1897–1918), had six brothers and two sisters, one which died at the age of two months.
Relevant evidence: No