In an opera titled for one of these non-tsar people, Gryaznoi falls for Sobakin's daughter Marfa, who is nearly killed by the jealous Lykov. The recitative (*) "Oh, what grief" appears in an opera titled for one of these people whose second act opens with a beer-drinking chorus. The aria "Oh, how doubt fills me!" from an opera titled for one of these people is sung by a stuttering character who dances with Esmeralda in a bear costume. Eight women sing “Wie Gott euch selig weihte” during a chorus named for one of these people accompanying Elsa. The “Dance of the Comedians” appears in an opera titled for one of these people, in which Mařenka tries to marry Micha’s son Jeník. A Bedřich Smetana opera is titled for a “bartered” one of these people. For 10 points, name this type of person who names a chorus from Lohengrin, also known as the “Wedding March.” ■END■ (10[1])