Clara Clemens
Clara Langhorne Clemens Samossoud, formerly Clara Langhorne Clemens Gabrilowitsch , was the daughter of Samuel Clemens, who wrote as Mark Twain. She was a contralto concert singer and, as her fathers only surviving child, managed his estate and guarded his legacy after his death. She was married twicefirst to Ossip Gabrilowitsch, then to Jacques Samossoud. She wrote biographies of Gabrilowitsch and of her father. In her later life she became a Christian Scientist.
Clara was the second of three daughters born to Samuel Clemens and his wife Olivia Langdon Clemens in Elmira, New York. Her older sister, Susy, died when Clara was 22. Her only brother, Langdon, died as an infant before she was born. Her younger sister was Jean. Clara had a serious accident as a child, while riding a toboggan she ended up being hurled into a great oak tree. This resulted in a severe leg injury that almost led to amputation.
Source: Wikipedia