Mileva Marić (Serbian Cyrillic: Милева Марић; December 19, 1875 – August 4, 1948), sometimes called Mileva Marić-Einstein or Mileva Marić-Ajnštajn (Serbian Cyrillic: Милева Марић-Ајнштајн), was a Serbian physicist and mathematician and the first wife of Albert Einstein from 1903 to 1919. She was the only woman among Einstein's fellow students at Zürich Polytechnic and was the second woman to finish a full program of study at the Department of Mathematics and Physics. Marić and Einstein were collaborators and lovers and had a daughter Lieserl in 1902, whose fate is unknown. They later had two sons, Hans Albert and Eduard.