Question: When did Princess Sophie Of Saxe-Coburg-Saalfeld's father die?
Sentence (from "Francis, Duke of Saxe-Coburg-Saalfeld"): Francis, Duke of Saxe-Coburg-Saalfeld (Coburg, 15 July 1750 – Coburg, 9 December 1806), was one of the ruling Thuringian dukes of the House of Wettin.
Relevant evidence: Yes