Question: When did Duke Georg Alexander Of Mecklenburg-Strelitz's mother die?
Sentence (from "Duke Georg Alexander of Mecklenburg-Strelitz"): Duke Georg Alexander of Mecklenburg-Strelitz (6 June 1859 – 5 December 1909) was the eldest of the two surviving sons of Duke Georg August of Mecklenburg-Strelitz and of Grand Duchess Catherine Mikhailovna of Russia.
Relevant evidence: Yes