Claim: Helios is the brother of Eos.
Evidence: He is the son of the Titan Hyperion and the Titaness Theia -LRB- according to Hesiod -RRB- , also known as Euryphaessa -LRB- in Homeric Hymn 31 -RRB- and brother of the goddesses Selene , the moon , and Eos , the dawn.