Lilly Walleni is the stage name of Sanna Klara Vallentin (1875–1920), a Swedish mezzo-soprano. Thanks to her powerful voice and her dramatic temperament, she is remembered in particular for the Wagner roles she performed in Germany's principal opera houses as well as in Stockholm. From 1911 to 1916, she was engaged by the Court Opera in Hannover where she was honoured with two Lippe awards.Photograph credit: Anton Blomberg; restored by Adam Cuerden