Question: Who is Princess Dorothea Of Saxe-Coburg And Gotha's maternal grandmother?
Sentence (from "Princess Dorothea of Saxe-Coburg and Gotha"): Princess Dorothea Maria Henriette Auguste Louise of Saxe-Coburg and Gotha (30 April 1881 – 21 January 1967) was a princess of Saxe-Coburg and Gotha  by birth and the duchess of Schleswig-Holstein  through her marriage to Ernst Gunther, duke of Schleswig-Holstein.
Relevant evidence: No