One year later Einstein s first son, Hans Albert, was born and his second son Eduard followed in 1910. In 1909 he became professor for theoretical physics at the University of Zurich.n 1903 he married his college mate Mileva Maric. One year later Einstein s first son, Hans Albert, was born and his second son Eduard followed in 1910. In 1909 he became professor for theoretical physics at the University of Zurich. After that time he was given a professorship in Prague and then again in Zurich.