Question: Who is the maternal grandmother of Prince Vsevolod Ivanovich Of Russia?
Sentence (from "Princess Helen of Serbia"): Helen was also a niece of Anastasia of Montenegro (or "Stana"), wife of Grand Duke Nicholas Nikolaevich of Russia, and of Milica of Montenegro, wife of Grand Duke Peter Nicolaievich of Russia, the women who introduced Grigori Rasputin to Tsarina Alexandra.
Relevant evidence: No