From Wikipedia

 Hypatia and Alexandria

Hypatia; born between AD 350 and 370; died March 415 was a Greek scholar from Alexandria, Egypt, considered the first notable woman in mathematics, who also taught philosophy and astronomy. She lived in Roman Egypt, and was killed by a Christian mob who accused her of causing religious turmoil. Some suggest that her murder marked the end of what is traditionally known as Classical antiquity, although others such as Maria Dzielska and Christian Wildberg observe that Hellenistic philosophy continued to flourish in the 5th and 6th centuries, Wildberg suggests until the age of Justinian .