"or perhaps that of Heliogabalus "

Elagabalus (203–222), also known as Heliogabalus, was Roman Emperor from 218 to 222. He was a member of the Severan Dynastry, and was Syrian on his mother's side.  He became emperor at the age of 14, and took the name Marcus Aurelius Antoninus Augustus.

During his brief rule he showed total disregard for tradition, and indulged in extreme hedonism and decadence. He replaced the traditional head of the Roman pantheon, Jupiter, with a lesser god, known in Greek as Helios, hence his name Heliogabalos, which was conferred on him after his death.  He married as many as five times, lavished favours on male courtiers rumoured to be his lovers, and was generally wild and riotous.  At 18, he was assassinated in a plot led by his grandmother and members of the Praetorian Guard.