Question: When did Count Michael Mikhailovich Of Torby's mother die?
Sentence (from "Count Michael Mikhailovich of Torby"): Count Michael Mikhailovich de Torby (8 October 1898 in Wiesbaden – 25 April 1959 in London) was the son of Grand Duke Michael Mikhailovich of Russia (1861–1929) and his morganatic wife Countess Sophie of Merenberg (1868–1927).
Relevant evidence: Yes