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Lilly Walleni (1875–1920) is the stage name of Swedish mezzo-soprano Sanna Klara Vallentin. Known for her powerful voice and dramatic stage presence, she performed major Wagnerian roles – including Elsa in Lohengrin, Elisabeth in Tannhäuser, and Brünnhilde in Die Walküre – at leading opera houses in Germany and at the Royal Swedish Opera in Stockholm. From 1911 to 1916 she was engaged by the Court Opera in Hanover, where she received cultural honours from the principalities of Lippe and Schaumburg-Lippe. This photograph shows Walleni in the title role of the opera Daria at the Royal Swedish Opera in 1907.Photograph credit: Anton Blomberg; restored by Adam Cuerden