Hymenaeus was the god of weddings or, more specifically, of the wedding hymn sung by the bride’s train as she was escorted to the house of the groom.

Residence: Mount Olympus
Symbols: Bridal torch
Parents: Apollo and a Muse
Roman equivalent: Hymen

Eros, Hebe, Heracles and Hymenaeus | Athenian red-figure pyxis C5th B.C. | University of Pennsylvania Museum of Archaeology
Eros, Hebe, Heracles and Hymenaeus. Athenian red-figure pyxis, c. 5th BC, University of Pennsylvania Museum of Archaeology.

Hymenaeus was numbered amongst the Erotes, the youthful, winged gods of love. As a god of song he was usually described as a son of Apollo and one of the Muses. He was supposed to attend every wedding. If he did not, then the marriage would supposedly prove disastrous, so the Greeks would run about calling his name aloud. He presided over many of the weddings in Greek mythology, for all the deities and their children.