Thomas Martin Einstein
Albert Einstein had three children, Lieserl Maric (1902–1903?), Hans Albert Einstein (1904–1973), and Eduard "Tete" Einstein (1910–1965), but only Hans Albert is known to have married and had children. Hans Albert's only biological child to survive to adulthood was Bernard Caesar Einstein (1930–2008), who was a physicist and the father of Thomas Martin Einstein.
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.