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.
List of haplogroups of historic people
Albert Einstein is alleged to belong to Y Haplogroup E. Tested Einsteins from Germany belong to E1b1b1b2* (cluster SNP PF1952, formerly known as the E-Z830-B or "Jewish cluster"). A patrilineal descendant of Naphtali Hirsch Einstein (1733–1799), Albert Einstein's great-grandfather,Prince-Bishopric of Augsburg of the Holy Roman Empire, was tested and belonged to E-M35 (E1b1b1).