Although we're dealing with different trinities, I think. The "Holy Trinity" of Catholicism is Father / Son / Holy Spirit, while we're talking about Father / Mother / Divine Child. But the idea is pretty much the same, triple divinity. The three side chambers of Newgrange, perhaps?
This is what i'm suggesting, Anthony, we are dealing with the same Trinity !!
The Mother/Father/Son(Divine child) is the Matriarchal Trinity with utmost importance on the Mother/Goddess and her gifts (of immortality/her 'apples').
The Holy Spirit/Father/Son of christianity is a patriarchal (Hermetical) formulation of the matriarchal one - the patriarchs then taking the gift(s) from the Goddess and replacing it (knowing themselves that it is the Goddess' but not acknowledging the fact) with a fully male(phallic) principle and, ultimately, to a single King/Christ/Saviour !
Again, i can't impress it enough, that the cosmology changed from a knowledge of reincarnation to become a hermetical 'as above, so below' principle, based on the observation of the sun and moon cycles.
So, yes, i take your point in expressing the trinity as Sun/Moon/Star(s) but this is a reformulated/secretive view and, NOT the original.
[The old saying that the victors write History is an understatement here !]
For the 12 pillars and basins in NewGrange refer to, as i made reference to in an earlier reply, Mosaic worship/laws - see Exodus 24, 4-7.
The crucifix symbolism/archetype is another interesting point that i will try to come to in another post.
Also, think about Cuchulainn, whose mother was impregnated through a sort-of holy ghost visitation of Lugh. Significantly, this happened IN Newgrange AND at the time of Winter Solstice / Christmas.
Yes, NewGrange is the womb of birth/RE-birth and, thus, in parallel with the labyrinth of Crete - another womb symbol. But also
, it is a death chamber/underworld..........reincarnation - death followed by re-birth.
This is why the myth states IN NewGrange AND at Winter Solstice - this is the time of the dying of the Waning Sun (dying/ghost Father) and three days (72 Hours) later the birth of the Waxing Sun (son, Cuchulainn).