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.
Mileva Marić
The question whether (and if so, to what extent) Marić contributed to Einstein's early work, and to the "Annus Mirabilis Papers" in particular, is the subject of debate. Many professional historians of physics argue that she made no significant scientific contribution, while others suggest that she was a supportive companion in science and may have helped him materially in his research. The couple's first son, Hans Albert, said that when his mother married Einstein, she gave up her scientific ambitions.