Saint Ildephonsus (~607 - ~670) was an Archbishop of Toledo he wrote a book called Crown of the Virgin. It is translated by Fr. Robert Nixon and published by Tan Books.
To me the book is somewhat similar in conception to the Harp of Glory which I posted previously about. The Harp of Glory is a long-form poem where each section starts with a successive letter of the Ethiopian alphabet, and is based on a Byzantine long-form poem to Our Lady (if I'm remembering the details correctly). Instead of creating a single long poem, Saint Ildephonsus, using words, creates a Crown and decorates it in 24 places with jewels and flowers and such.
It is not a poem, though it does contain verses. It is not a prayer, but does contain some original prayers that are beautiful. It is not a text on Marianology, but all these types of writings do serve in some ways as that. It is an offering from the Saint to the Blessed Mother of God that uses prose, that connects poems and prayers, to praise.
That he puts on this crown of words, gems of words and flowers of words, strikes me as very child-like, where a child might take every pretty or fanciful thing thing they see and drape it over themselves or a doll and show it all off as the most beautiful thing. Approaching the divine in a child-like manner is something many religions acknowledge as important, and Christianity is no exception (Christ also gives a stern warning against misleading (which has to include abusing or dissuading) children in their approach to God).
So, where a western sense of reason and order makes his work different than the Harp of Glory which is effervescent and overflowing with love for Our Lady, just because it is not written strictly as a poem, it gains subtly by the nature of the design and the spirit he brought to the writing, an undercurrent of child-like playfulness that I don't think should be forgotten when reading it.
It really is a lovingly created set of chapters that should enrich anyone who is interested in Mary. That he lived in the 600s is also another example of how far back Marian devotion goes, and it goes back much further than this.
"What ... am I ... able to add to such ineffable splendor, to such transcendent glory? But may my humble pen strive for this goal alone-- that it may contribute the merest drop, however small, to the limitless ocean of your immortal praise ... (these last ellipses are in the text, but I extend the ellipse further) The crown which I would fashion for you ... ought to be fashioned of purest gold."
The 24 places on the crown are decorated by 12 precious stones, interspersed by celestial bodies and flowers which between them total twelve, each getting a chapter. It is a shorter book than the Harp of Glory, but it goes from margin to margin in most places and it does not have the extensive footnotes the Harp has. For those who are like "wow, you Mary-fanatics go overboard", a look at the Harp (which is maybe the most over-the-top book of this kind that I know of) shows all the things that protestants might question are pulled from the Bible. The only question is if you accept biblical typology, the seeing of patterns and prefiguration in history and in the bible.
Similarly, veneration of Mary hinges more on what the Communion of Saints means and (to me anyway) what was meant by "this generation shall not pass before ..." I recently read how the dna (as tissue? I have to go back and read it) of a child is retained in the mother's body. If we accept that Jesus ascended into heaven, well part of Jesus remained with Mary, so why leave that part behind? That's my personal view on the Assumption of Mary.
So check out Saint Idlephonsus' Crown of the Virgin. It's nice.
https://tanbooks.com/products/books/the-virgin-mary/devotions/crown-of-the-virgin-an-ancient-meditation-on-marys-beauty-virtue-and-sanctity/
there doesn't seem to be anything here