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
Mileva Marić (Serbian Cyrillic: Милева Марић; December 19, 1875 – August 4, 1948), sometimes called Mileva Marić-Einstein or Mileva Marić-Ajnštajn, was a Serbian mathematician. She was the only woman among Albert Einstein's fellow students at Zürich's Polytechnic and was the second woman to finish a full program of study at the Department of Mathematics and Physics. Marić and Einstein were collaborators and lovers and had a daughter Lieserl in 1902 whose fate is unknown. They later had two sons, Hans Albert and Eduard.