300s BC births

3rd-century BC Sicilian Greek ruler

Erasistratus (; ; c. 304 – c. 250 BC) was a Greek anatomist and royal physician under Seleucus I Nicator of Syria. Along with fellow physician Herophilus, he founded a school of anatomy in Alexandria, where they carried out anatomical research. As well, he is credited with helping to found the methodic school of teachings of medicine in Alexandria whilst opposing traditional humoral theories of Hippocratic ideologies. Together with Herophilus, he is credited by historians as the potential founder of neuroscience due to his acknowledgements of nerves and their roles in motor control through the

Basileus of Bithynia from 278 to c. 255 BC

ancient Roman general and statesman

Persaeus (; 307/6–243 BC) of Citium, son of Demetrius, was a Greek Stoic philosopher, and a friend and favourite student of Zeno of Citium.

roman consul in 262 BC

Syracusan princess, daughter of Theoxena of Syracuse and Agathocles of Syracuse