Did gaia have any brothers or sisters?

Answer 1

Where Gaia is a daughter of Hemera (day) and Aither (air), her siblings include: Uranus (heavens) and Thalassa (sea).

Answer 2

In Greek mythology, Gaia is believed to be the mother of the Titans, who were her children. She is also considered the mother of the Giants, the Cyclopes, and the Hecatoncheires. So, in mythological terms, Gaia did not have brothers or sisters but was seen as the mother of many significant beings in Greek mythology.