Claim: Maria Theresia Löw's daughters, Lilli Lehmann (24 November 1848 – 17 May 1929) and Marie Lehmann (15 May 1851 – 19 December 1931), were also soprano singers.
Evidence: Lilli Lehmann, born Elisabeth Maria Lehmann, later Elisabeth Maria Lehmann-Kalisch (24 November 1848 – 17 May 1929) was a German operatic soprano. The future opera star's father, Karl-August Lehmann, was a singer (Heldentenor) while her mother, Maria Theresia Löw (1809–1885), was a soprano. Her younger sister, Marie, also went on to become an operatic soprano.