Rhea — Titan Goddess

Rhea was the Titanis (Titaness) mother of the gods, and goddess of female fertility, motherhood, and generation. Her name means "flow" and "ease." As the wife of Kronos (Cronus, Time), she represented the eternal flow of time and generations.
In myth, Rhea was the wife of the Titan Kronos (Cronus) and Queen of Heaven. When her husband heard a prophecy that he would be deposed by one of his children, he took to swallowing each of them as soon as they were born. But Rhea bore her youngest, Zeus, in secret and hid him away in a cave in Krete (Crete) guarded by shield-clashing Kouretes (Curetes). In his stead she presented Kronos with a stone wrapped in swaddling clothes which he promptly devoured.

Rhea's Family
Rhea and Cronus had six children; Hestia, Hades, Demeter, Poseidon, Hera and Zeus. Cronus, afraid that he would be overthrown by his children just like he had done with his father, decided to swallow all of them. However, he was tricked by Rhea, who managed to save Zeus from his father. When Zeus grew up, he forced his father to disgorge his siblings and eventually overthrew him.

Rhea's Role
Although Rhea was considered the "mother of gods", similarly to Gaea and Cybele, she did not have a strong cult and many followers. She had a temple in Crete, the place in which she hid Zeus to save from his father.

Rhea's Portrayal
In art, she started appearing in the fourth century BC; however, she was often depicted with characteristics similar to those used for Cybele, thus making the two goddesses indistinguishable. Rhea was often symbolised as a pair of lions that pulled a celestial chariot. This symbol was often placed on city gates, the best known example being that at the city of Mycenae, where two stone lions guarded the gates.