Clytemnestra produced four offspring from two eggs: Castor and Clytemnestra from one egg, and Helen and Polydeuces (Pollux) from the other. Therefore, Castor and Clytemnestra were fathered by Tyndareus, whereas Helen and Polydeuces were fathered by Zeus. Agamemnon and his brother Menelaus were in exile at the home of Tyndareus; in due time Agamemnon married Clytemnestra and Menelaus married Helen. In a late variation, Euripides's "Iphigenia at Aulis", Clytemnestra's first husband was Tantalus, King of Pisa; Agamemnon killed him and Clytemnestra's infant son, then made Clytemnestra his wife. In another version, her first husband was King of Lydia. The kings of
Pontus (mythology) and his sister-consort Ceto, and the "Strong Goddess" Eurybia. With the sea goddess Thalassa (whose own name simply means "sea" but is derived from a Pre-Greek root), he fathered the Telchines and all sea life. In a Roman sculpture of the 2nd century AD, Pontus, rising from seaweed, grasps a rudder with his right hand and leans on the prow of a ship. He wears a mural crown, and accompanies Fortuna, whose draperies appear at the left, as twin patron deities of the Black Sea port of Tomis in Moesia. Pontus (mythology) In Greek mythology, Pontus (; , , "Sea")