Aristaeus the Elder (369–299 BCE)
Born 369 BCE, died 299 BCE.
Aristaeus the Elder (Ancient Greek: Ἀρισταῖος ὁ Πρεσβύτερος; 370 – 300 BC) was an ancient Greek geometer and mathematician who worked on conic sections. He was a contemporary of Euclid.
Text from the Wikipedia article Aristaeus_the_Elder, licensed CC BY-SA 4.0.