Question: Who is the maternal grandfather of Duke Siegfried August In Bavaria?
Sentence (from "Princess Amalie of Saxe-Coburg and Gotha"): Princess Amalie of Saxe-Coburg and Gotha (Marie Luise Franziska Amalie; 23 October 1848 – 6 May 1894) was a Princess of Saxe-Coburg and Gotha by birth and a Duchess in Bavaria through her marriage to Duke Maximilian Emanuel in Bavaria.
Relevant evidence: No