Hans Albert, the first son of Albert Einstein (1879–1955) and Mileva Maric (1875–1948) was born in Bern in Kramgasse 49 on May 14, 1904.
Hans Albert’s childhood was a normal one. Einstein, who worked also a lot at home on his physical theories besides his work in the Berne Patent Office liked to take care of his son. Mileva reported: “My husband spends his pastime at home mostly playing with his son.” Einstein and Mileva’s second son Eduard (1910–1965) was born in Zurich in 1910. He was given the nickname “Tete”.