Theon of Alexandria, was a Greek scholar and mathematician who lived in Alexandria, Egypt, his daughter was Hypatia, a Greek mathematician, astronomer, inventor, and philosopher in Egypt, then a part of which location?
Theon of Alexandria:  His daughter Hypatia also won fame as a mathematician. Hypatia: Hypatia ( ; ; Greek: Ὑπατία "Hupatía"; born 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.
Eastern Roman Empire