This source names Apollo directly: "source of the oracle at Delphi before Apollo, and as the mother, by Uranos's spilled blood, of the Giants and the Erinyes."
Source TheogonyHesiod
This source names Cronus directly: "sickle and persuades her son Cronus to castrate his father with it, ending Uranos's reign; her own body is, in Hesiod's account, the physical earth itself, so most of her narrative acts are the..."
Source TheogonyHesiod
This source names Gaia directly: "the source of his immortality, while Gaia, mother earth and mother of the giants, rises bodily from the soil to plead for her son as Athena's serpent poisons him."
Source Pergamon Altar, Wikipedia
This source names Gaia directly: "a Titaness, daughter of Uranos and Gaia and wife of her brother Oceanus, mother by him of the rivers and the Oceanid daughters."
Source Tethys reclining in a giant shell chariot, from 'The Deities,' accession 18.17.2-18 (Metropolitan Museum of Art)
This source names Gaia directly: "frieze, giving the Athena/Alcyoneus/Gaia scene: Athena breaking the giant Alcyoneus's contact with the earth, from which Gaia, his mother and the source of his immortal strength, rises to plead for..."
Source The Gigantomachy Frieze of the Pergamon Altar (Study.com)
This source names The Mother directly: "oracle at Delphi before Apollo, and as the mother, by Uranos's spilled blood, of the Giants and the Erinyes."
Source TheogonyHesiod
This source names Gaia directly: "It illustrates the episode from Hesiod's Theogony in which Gaia, angered at her husband Uranus for imprisoning their children, gives their son Cronus (Saturn) an adamantine sickle and urges him to..."
Source The Mutilation of Uranus by Saturn (Cronus), World History Encyclopedia
This source names Uranos directly: "beginning of the world, bringing forth Uranos, the starry sky, to cover her completely before lying with him to bear the twelve Titans, the Cyclopes and the Hundred Handed Ones."
Source TheogonyHesiod