No, you are not answering my question. I'll try again.
Can you provide ANY Church in Christian history which used a 66-book (manuscript / scroll / writings) canon until the 16th century?
For example, here is an early canon listed by the Third Council of Carthage in 397 A.D.:
"It was also determined that besides the Canonical Scriptures nothing be read in the Church under the title of divine Scriptures. The Canonical Scriptures are these: Genesis, Exodus, Leviticus, Numbers, Deuteronomy, Joshua the son of Nun, Judges, Ruth, four books of Kings, two books of Paraleipomena, Job, the Psalter, five books of Solomon, the books of the twelve prophets, Isaiah, Jeremiah, Ezechiel, Daniel, Tobit, Judith, Esther, two books of Esdras, two books of the Maccabees. Of the New Testament: four books of the Gospels, one book of the Acts of the Apostles, thirteen Epistles of the Apostle Paul, one epistle of the same [writer] to the Hebrews, two Epistles of the Apostle Peter, three of John, one of James, one of Jude, one book of the Apocalypse of John. Let this be made known also to our brother and fellow-priest Boniface, or to other bishops of those parts, for the purpose of confirming that Canon. because we have received from our fathers that those books must be read in the Church. Let it also be allowed that the Passions of Martyrs be read when their festivals are kept."
---> Four books of Kings = First and Second Samuel and First and Second Kings
---> Paraleipomena = Chronicles
---> Five books of Solomon = Proverbs, Ecclesiastes, Song of Songs, Wisdom of Solomon, and Ecclesiasticus
---> Two books of Esdras = Ezra and Nehemiah
---> Jeremiah = Included the book of Baruch, which was not separated out until later (Baruch was Jeremiah’s scribe)
Source
That's 73 books. Incidentally, this is the exact same canon that the Catholic Church affirmed at Rome in 381 A.D., then again repeatedly throughout history by Damasus, Innocent, Galasius, the Fathers at Florence, then declared dogmatically at Trent when people began removing books from the canon, and affirmed yet again at Vatican I.
Can you provide a similar list ANYWHERE in history prior to the genesis of Protestantism in the 16th century which is comprised of 66 books? You made the claim. I'm just wondering if your claim was just an assumption that it always was?