Question: Who is Prince Waldemar Of Schaumburg-Lippe's maternal grandfather?
Sentence (from "Heinrich Donatus, Hereditary Prince of Schaumburg-Lippe"): Prince Heinrich Donatus of Schaumburg- Lippe was born in Hanover to Alexander, Hereditary Prince of Schaumburg- Lippe( born 1958), and Princess Marie- Louise(" Lilly") of Sayn- Wittgenstein- Berleburg( born 1972), who had married in August 1993.
Relevant evidence: No