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).
Milan N. Popović
Milan Popović has been doing psychohistorical studies of Mileva Marić-Einstein, especially concerning her relationship with her husband Albert Einstein. This study is based on the presentation and analysis of about 70 letters and postcards which Mileva Marić, and some of them Albert Einstein too, addressed to Helena Savić (grandmother of Milan Popović), their close friend and colleague from studies in Zurich. These letters are significant for better understanding of the relationship evolution of the Einstein couple, as well as for psychology of this ingenious man.