Question: Who is Princess Helena Of Waldeck And Pyrmont's maternal grandfather?
Sentence (from "Princess Helena of Waldeck and Pyrmont"): (Helene Friederike Auguste; later Duchess of Albany; 17 February 1861 – 1 September 1922), who became a member of the British royal family by marriage, was the fifth daughter and child of George Victor, Prince of Waldeck and Pyrmont and his first wife, Princess Helena of Nassau.
Relevant evidence: Yes