Liviu Librescu was born in 1930 to a Jewish family in the city of Ploiești, Romania. After Romania allied with Nazi Germany in World War II, his family was deported to a labor camp in Transnistria, and later, along with thousands of other Jews, was deported to a ghetto in the Romanian city of Focșani. His wife, Marlena, who is also a Holocaust survivor, told Israeli Channel 10 TV the day after his death, "We were in Romania during the Second World War, and we were Jews there among the Germans, and among the anti-Semitic Romanians." Dorothea Weisbuch, a cousin of Librescu living in Romania, said in an interview to Romanian newspaper "Cotidianul": "He was an extraordinarily gifted person and very altruistic. When he was little, he was very curious and knew everything, so that I thought he would become very conceited, but it did not happen so; he was of a rare modesty."