Tethys

Tethys was the first of Gaea's children to stay in the pack. She was a proficient hunter, though she had to work hard to prove herself to Kronos, who never liked her.
She took a liking to Oceanus as soon as they met, and with her feelings reciprocated they quickly became a pair and adopted several daughters.
Tethys died peacefully in her sleep and was followed by Oceanus a few rollovers later.