Mothers of Prometheus
In Prometheus Bound, Prometheus says his mother is either Themis or Gaia, right before saying they're the same person.
"And yet my mother--Themis, call her, or Gaea, she's the same under all names." - Prometheus Bound, Line 211-212
But both goddess and the other identities the ancient sources give of his mother work well with his character.
Themis
Themis is the titan goddess of justice, respected and revered as part of the cosmic order.
If Prometheus is her son, then his rebellion isn't just stubbornness or affection for humanity. Giving fire to mortals becomes a moral act that was right, and perhaps, even divine.
And in The Eumenides, Themis is said to have once possesses Delphi, making Prometheus' prophetic powers another inheritance from her.
Gaia
Gaia is the Earth Primordial and the mother of the Titans.
The play always emphasizes that Prometheus is older than the Olympians, but if he's her son, he becomes one of the elder gods, part of the same generation as Kronos and Oceanus, putting him closer to the usurped than the usurpers.
He and Zeus are then placed on different footing, and their conflict becomes the old world staring down the new one, refusing to back down or admit that its time is over.
Clymene
"Now Iapetus took to wife the neat-ankled mad Clymene, daughter of Ocean, and went up with her into one bed. And she bare him... clever Prometheus, full of various wiles..." - Hesiod's Theogony, Line 507–511
Clymene is an Oceanid and wife of the Titan Iapetus.
If Prometheus is her son, then his relationship with the Chorus, aka the Oceanids, becomes more personal than being mere in-laws. He was born and raised by one of them. He knows them as they know him, making their grief familial rather than merely sympathetic.
And his interaction with Oceanus becomes a multi-generational conflict between a grandfather who compromises to survive and a grandson who would rather suffer for his morals.
Hera
"When Hera was being raised by her parents, one of the Giants, Eurymedon, raped her and made her pregnant. She gave birth to Prometheus. Zeus later married his sister [Hera], and when he found out what had happened, he threw Eurymedon into Tartaros, and hung Prometheus up in chains (he used the fire as a pretext)." - Euphorion, D Scholia to the Iliad:
While this tradition doesn't work with the play, since Prometheus isn't a young god and it takes place early in Zeus's reign, that doesn't mean it is any less fascinating.
Zeus punishing Hera's illegitimate child is an interesting reversal of their roles, as Prometheus is punished not for what he did but for who he is.
And that means Heracles, a son of Zeus, is freeing the son of the goddess who made his life miserable.
Whether he knows it or not, he chooses mercy. And if he did know, then he does what Hera never could: not judging someone for the circumstances of their birth.
Conclusion
As a result, if Prometheus is the:
Son of Themis, he's righteous and just.
Son of Gaia, he's ancient and wise in years.
Son of Clymene, a compassionate family member.
Son of Hera, an outsider marked by birth.
Different mothers, same Prometheus.
Someone who suffers rather than surrender what he believes is right.
















