They say Hera created him alone after Athena was born from the Zeuss head to show that she could have a child without anyones help too. But they also say that his father was Zeus. When he was born he was basically the only ugly god to be born. Hera was disgusted by it so she flung him out of the heavens. Thetis and Eurynome found him in the sea and rescued him.
They kept him in a cave under the sea for nine years treating him with the love, kindness, and respect as if he were their own child. While living under the sea Hepheastus, skilled evenly in both hands, made a golden throne were he attached golden mesh fetters that were so fine they were invisible.
Hephaestus was looking for revenge for his mothers cruelty. So he built a golden throne that wrapped her in invisible chains. As soon as she sat in the throne she was trapped. Hera was trapped in the throne only until Dionysus 2 got Hephaestus drunk. Dionysus 2 then got a donkey and put Hephaestus on the donkeys back. After that Dionysus took Hephaestus to Mount Olympus and let Hera go after he was given Aphrodite as his wife.