Who or what was Asclepius?

Asclepius (Greek Ἀσκληπιός, transliterated Asklēpiós; Latin Aesculapius) is the demigod of medicine and healing in ancient Greek mythology. Asclepius represents the healing aspect of the medical arts, while his daughters Hygieia, Meditrina, Iaso, Aceso, Aglæa/Ægle and Panacea (literally, "all-healing") symbolize the forces of cleanliness, medicine and healing, respectively
Asclepius was the ancient Greek god of medicine.