Question: Which German Prince, born in 1818, composed Diana von Sloange?
Sentence (from "Ernest II, Duke of Saxe-Coburg and Gotha"): Ernest was born in Coburg as the eldest child of Ernest I, Duke of Saxe-Coburg-Saalfeld, and his duchess, Princess Louise of Saxe-Gotha-Altenburg.
Relevant evidence: No