Speaking of the "retrospective truth" but "chronological falseness" of the "modern day" Triple Goddess... I have seen some people believe that the idea of the "Triple Moon goddess" is also a modern invention. The idea that there is this trinity of Greek deities that all represent the moon but on a different level - you usually see this as "Selene, Artemis, Hekate".
This is actually a false assumption. The "triple moon" was an actual concept of Antiquity. But it is not as exactly as people are led to believe.
Because while it is true that, as time went by, the Ancient Greeks ended up having multiple deities embodying the moon (Selene, Hekate, Phoebe, etc, etc), the idea of the "triple moon" goddess came from the Romans. It was in their literature and poetry that they codified it and played on the idea of Hekate's trinity and multiplicity as a night-goddess to syncretize the various moon deities together.
It also makes sense because the Romans put a much bigger emphasis on the idea that Artemis (Diana for them) was a moon-goddess, much more than the Greeks.
So the Romans did claim that Luna (Selene) and Diana (Artemis) were two incarnations of the Moon Goddess, one for the moon in the heavens and upper, celestial realm, and one for the moon by the "earthly plane". And yes there was a third incarnation for the "moon by the underworld"... But it was not always "Trivia" (Hekate). Sometimes it was Trivia, but other times Hekate/Trivia was handled rather as the triple-moon in her entirety (drawing on the Greek tradition that Hekate had power over all three "realms" of the universe). But more often the "moon of the underworld" was... Proserpina. The Roman Persephone. Due to the Romans emphasizing a syncretism between Hekate/Trivia, as the chthonian goddess of dark things, with Prosperpina as the Queen of the Underworld.
So while the Ancient Romans did not have a "maiden-mother-crone" goddess, they DID have a triple-moon goddess, present in the three planes of the cosmos.
