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).
Mileva Marić
In 1922, Einstein received news that he had won the Nobel Prize in November. His divorce agreement promised her his Nobel Prize money. Under the terms of the agreement, the money was to be held in trust for their two boys, while she was able to draw on the interest. Based on newly released letters (sealed by Einstein's step-granddaughter, Margot Einstein, until 20 years after her death), Walter Isaacson reported that Marić eventually invested the Nobel Prize money in three apartment buildings in Zurich to produce income. Marić lived in one, a five-storey house at Huttenstrasse 62; the other two were investments.