Oceanus

Oceanus was originally the ancient river that ran around and beyond the earth and its seas. In Homer, Oceanus' wife is Tethys. Hera grew up with Oceanus and Tethys.
In Hesiod, the pair are Uranus and Gaia's children.
Oceanus had 300 sons and 300 daughters called the Oceanides. Also see:
Map showing Oceanus
Cosmogonies
Titans
Pleiades