His mother is known, but there are doubts as to who is his father. So we do not know for sure. Half-siblings, yes.
If you mean the primordial Eros, he is either self-formed, or son of Nyx or Khaos. Eros who was son of Aphrodite alone, Himeros is the twin to Eros. Harmonia, Deimos, Anteros, and Phobos are all children of Ares and Aphrodite; who Eros is credited to being the son of.
None, for Aphrodite never married and had children with Hephaestus.
The siblings of Eros as a son of Aphrodite would have included Harmonia, goddess of harmony; Peitho, Rhode and Herophile and Beroe as sisters. As wells as Deimos & Phobos, Anteros, Pothos, Himeros, Iakkhos, Aeneas & Lyros, Hermaphroditos, Priapos, Astynoos and Eryx as brothers.
First came Gaia (Earth) and Eros (Love), then Erebus and his sister Nyx (Night).
In one form of Greek mythology, yes, Gaia has siblings: her future partner Ouranos, Tartarus, Nyx and Eros. In another form, no; she was the only being that emerged from Chaos.
Eros was the god of eros. Eros is Greek for love or sexual desire.
In Greek mythology, depending on which versions you read, Eros was the son of the goddess of love, beauty and fertility, Aphrodite, and the god of war, Ares. He had six siblings: Anteros, Deimos, Harmonia, Himeros, Phobos, and Pothos. Rough equivalents in Roman mythology are Venus (Mum), Mars (Dad), and Cupid, (son). His siblings according to Rome were Concordia, Formido (or Metus), and Timor.
The Greek name for the God Eros is Eros.. The Latin name for Eros is Cupid
Eros International PLC (EROS)had its IPO in 2013.
Eros's mother was Aphrodite. Eros's father was Zeus.
Eros is a Cupid .
Eros, the primordial deity, either emerged at creation without mother or father, was the child of Chaos (Gap) alone, or Nyx (Night) alone, or Nyx and Erebos (Darkness). Eros, as the son of Aphrodite was said to have emerged with Aphrodite already pregnant with Eros alone - or he was born later by Ares and Aphrodite. Or Ouranus and Aphrodite, or Ouranus and Gaia, Or Zephyrus and Iris. Or Eileithyia, goddess of child birth was said to be his mother. Rarely, it is Poros (Expedience) and Penia (Poverty).