Death of Hypatia by William Mortensen about 1930
Hypatia (born c. 350–370; died 415 AD), often called Hypatia of Alexandria, was a Greek mathematician, astronomer, inventor, and philosopher in Egypt, then a part of the Eastern Roman Empire. She was the head of the Neoplatonic school at Alexandria, where she taught philosophy and astronomy.
A pagan, Hypatia was murdered by a Christian mob known as the Parabalani after being accused of exacerbating a conflict between two prominent figures in Alexandria: the Prefect, Orestes, and the bishop, Cyril of Alexandria. (from Wikipedia)