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.
Why is Uranus is named after the father of the titans in Greek mythology?
Uranus was the father of the titans in Greek mythology. See 'related questions' as to why the planets were named after the gods. ...