Hephzibah Menuhin (20 May 1920 – 1 January 1981) was an American-Australian pianist , writer, and human rights campaigner. She was sister to the violinist Yehudi Menuhin and to the pianist, painter, and poet Yaltah Menuhin . She was also a gifted linguist and writer, co-authoring several books and writing many papers with her second husband, Richard Hauser.