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.
Harry Einstein
Einstein was the father of four sons: the writer Charles Einstein (by his first marriage to Lillian Anshen), and comedians Albert Brooks and Bob Einstein, and advertising executive Clifford Einstein (with his second wife, actress Thelma Leeds). Harry and Lillian divorced in 1929.