Question: When did Count Michael Mikhailovich Of Torby's mother die?
Sentence (from "Sophie of Merenberg"): Countess Sophie Nikolaievna of Merenberg, Countess de Torby (1 June 1868 – 14 September 1927), also known as "Countess Torbay", was the elder daughter of Prince Nikolaus Wilhelm of Nassau and his morganatic wife, Natalia Alexandrovna Pushkina (who had been granted the title of Countess of Merenberg).
Relevant evidence: Yes