A lot. The Titans, Cyclopes, Furies, several nymphs, the Hundred-Handed Ones, and the goddess Aphrodite.
Uranus was the sky, and Gaia the Earth in Greek Mythology.
The Titan children of Uranus and Gaia took Uranus's place as rulers of the heavens, for Uranus had been castrated by the scythe that Cronus had wielded. Cronus was afterwards called King of the Titans, his son Zeus would later overthrow him for swallowing his own sons and daughters in fear of a prophesy of Gaia and Uranus, that he would be overthrown be his children, as he had overthrown his father Uranus.
uranus
From Gaia.
Uranus, created by Gaia, was originally married to her. After Uranus was defeated (not killed) by Chronus, Gaia married Pontus (the sea).
No Gods were born from Gaia and Uranus but he Titans were. Kronos (Cronos, whichever), was the king of the titans.
In Greek mythology, Tethys, daughter of Uranus and Gaia was an archaic Titaness and aquatic sea goddess
Uranus and Gaia
Aetna.
Gaia had one husband which was her son named Uranus.
In Greek Mythology, Uranus is known to only be the offspring of Gaia and the father of her children. One could look at this as Gaia being both father and mother to Uranus, or Uranus not having a paternal parent.
Because Uranus Imprisonded Gaias Children into the deepest treches of Tartarus and this obviously caused pain to gaia