According to Google: http://www.latimes.com/entertainment/arts/culture/la-et-cm-clara-schumann-famous-wife-but-musician--in-her-own-right-20120913,0,6637501.story
Robert and Clara had 8 kids... Marie, Elise, Julie, Emil, Ludwig, Ferdinand, Eugenie, and Felix. However, Emil died at sixteen months. Several of the others died young, in tragic circumstances. Only four of the eight outlived their mother, and only Marie, Elise, and Eugenie lived a normal healthy life-span.