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Ernestine Lefebvre was the wife of the French photographer and caricaturist Gaspard-Félix Tournachon, better known as Nadar. They were married in 1843 and had two children, Paul and Marie. Ernestine was a talented artist in her own right, and her work was often exhibited alongside Nadar's. She also helped to manage his studio and business affairs. The couple remained married until Nadar's death in 1910.