Elizabeth Roboz Einstein
Roboz married Hans Albert Einstein, first son of physicist Albert Einstein, and professor of hydraulic engineering at the University of California, Berkeley, in June 1959. They did not have any children together, although Hans had four children from his first marriage to Frieda Knecht, only two of whom survived into adulthood. Hans died on July 26, 1973, and Roboz wrote a biography of him, "Hans Albert Einstein: Reminiscences of his Life and our Life Together" (1992).
Einstein family
Eduard Einstein (28 July 1910 – 25 October 1965) was born in Zürich, Switzerland, the second son of physicist Albert Einstein from his first wife Mileva Marić. Albert Einstein and his family moved to Berlin in 1914. Shortly thereafter the parents separated, and Marić returned to Zürich, taking Eduard and his older brother Hans Albert with her. His father remarried in 1919 and in the 1930s emigrated to the United States under the threat of the German Nazi regime.