Oceanus, in Greek mythology, was the river that was believed to encircle the world. The ancient Greek poet Homer called Oceanus the origin of all things, including the gods. Oceanus was also the name of the ancient god who was associated with this river. The god Oceanus was a Titan, one of the family of beings born to Uranus (the sky god) and Ge, or Gaea (the earth goddess), soon after the creation of the world. He was portrayed as an old man with a long beard and the horns of a bull. Oceanus was the husband of Tethys, who was also a Titan and a goddess of the sea.