(b Weimar, 25 April 1825; d Weimar, 25 Jan 1906). German soprano. She studied in Weimar, where she was engaged at the Hofoper from 1845 to 1867. Under the name of Rosa Agthe, in 1850 she sang Elsa in the first performance of Lohengrin, conducted by Franz Liszt. The following year she married the baritone Hans von Milde. She created Margiana in Peter Cornelius's Der Barbier von Bagdad (1858) and Chimène in the same composer's Der Cid (1865). Her repertory also included Lucia, Pamina, both of C. W. Gluck's Iphigenias, Leonore (Fidelio) and Lady Harriet (Martha).
From The Grove Book of Opera Singers in Oxford Reference.