Tethys

Tethys was the eldest daughter of Ouranós and Gaia, younger sister to Oceanus, her husband. She was a Titaness and mother of the Greek River Gods. She represented the motherly aspects of the sea and remained neutral, along with her husband and sisters during the Titanomachy. She raised Hera according to some accounts. Tethys is also the name of a prehistoric ocean and a moon of Saturn, named after the Roman form of her brother.