Question: When is Princess Sophie Of Saxe-Coburg-Saalfeld's mother's birthday?
Sentence (from "Countess Augusta Reuss of Ebersdorf"): Caroline Sophie Reuss-Ebersdorf  (19 January 1757 – 16 November 1831), was by marriage the Duchess of Saxe-Coburg-Saalfeld.
Relevant evidence: Yes