In Greek mythology Leucothoe was a Babylonian princess. The daughter of Orchamus, a king of Persia, Leucothoe was either a lover of the sun god Helios or a victim of rape. A nymph or Leucothoe's own sister named Clytie, who loved Helios and was jealous of Leucothoe, informed Leucothoe's father that Leucothoe, despite being unmarried, was no longer a virgin, whereupon Orchamus buried his daughter alive in punishment. Helios then transformed Leucothoe's dead body into a frankincense tree.

In ancient Greek religion and mythology, Helios is the god who personifies the Sun. His name is also Latinized as Helius, and he is often given the epithets Hyperion and Phaethon. Helios is often depicted in art with a radiant crown and driving a horse-drawn chariot through the sky. He was a guardian of oaths and also the god of sight. Though Helios was a relatively minor deity in Classical Greece, his worship grew more prominent in late antiquity thanks to his identification with several major solar divinities of the Roman period, particularly Apollo and Sol. The Roman Emperor Julian made Helios the central divinity of his short-lived revival of traditional Roman religious practices in the 4th century AD.