https://www.cnet.com/news/google-doodle-celebrates-mathematician-olga-ladyzhenskaya/

She lost him as a teenager in 1937, when he was arrested by Soviet authorities, declared an enemy of the state and killed. Her family name stopped her from getting into Leningrad State University (now Saint Petersburg State University) two years later, but she ultimately got into Moscow University in 1943.

After earning her Ph.D., Ladyzhenskaya went on to lead the Laboratory of Mathematical Physics at the Steklov Mathematical Institute in Moscow and to write more than 250 papers.