Question:  Symphony No. 2 in C major was dedicated to a Duke whose younger brother become the consort of who?
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: Yes