Albert Einstein
E=MC²
birth and early years
Family
The Einstein family is the family of the physicist Albert Einstein 1879–1955. Einstein's great-great-great-great-grandfather, Jakob Weil, was his oldest recorded relative, born around the turn of the 18th century, and the family continues to this day. Albert Einstein's great-great-grandfather, Lob Moses Sontheimer 1745–1831, was also the grandfather of the prominent tenor Heinrich Sontheim 1820–1912 of Stuttgart. Albert's three children were from his relationship with his first wife, Mileva Marić, his daughter Lieserl being born a year before they married. Albert Einstein's second wife was Elsa Einstein, whose mother Fanny Koch was the sister of Albert's mother, and whose father Rudolf Einstein was the son of Raphael Einstein, a brother of Albert's paternal grandfather. Thus Albert and Elsa were first cousins through their mothers and second cousins through their fathers