Erasistratus of Chios (304 BC- 250 BC), the Greek anatomist and royal physician under Seleucus I Nicator of Syria
Erasistratus died in 250 BC. He was 54 years old when he died.
You say Erasistratus (E-Ris-trat-us) simples!
53 years old and 54 years old
he discovered a way of curing a patient who was properly LOVESICK with their step mother. genius, huh?