Question: Who is the maternal grandfather of Olga Nikolaevna Of Russia?
Sentence (from "Valentina Chebotaryova"): Valentina Ivanovna Chebotaryova( birth date unknown- April 23( O.S.)/ May 6( N.S.), 1919) recorded her impressions of work in a military hospital in Tsarskoye Selo, Russia during World War I in her journal.
Relevant evidence: No