St. Jerome is sometimes thought of as the father of the bible. He made an extensive study and translations of various books and collected writings most of which are found in the bible today. He petitioned Pope Damasus to adopt his list for books for canonization. St. Jerome referred to as bibiotheca Divina, “Divine Library”. The name Bible however comes from the Latin Bblia meaning “The Book”. All of which I’m sure you knew.
CATHOLIC ENCYCLOPEDIA: St. Jerome
The short answer is that prior to St. Jerome there were several different lists of books. Sorting through Gnostic and other heretical books as well as candidates for deuterocanonical books. St. Jerome is usually credited with “assembling” the list of books that were ultimately canonized.
Eusebius preserves St. Melito , the bishop of Sardis (c. 170 AD) list of Old Testament canon. The list maintains the Septuagint but only the Old Testament protocanonicals minus the Book of Esther.
The Council of Laodicea, (c. 360 A.D), produced a list of books similar to today's canon. This was one of the Church's earliest decisions on a canon. See Canon 60
Pope Damasus, (366-384 A.D), in his Decree, listed the books of today's bible.
The Council of Rome, (382 A.D), was the forum adopted St. Jerome’s list of books.
The Council of Hippo (393 A.D), a local north Africa council of bishops created the list of the Old and New Testament books identical to the Holy Scriptures adopted at Trent.
The Council of Carthage (397 A.D), a local north Africa council of bishops created the same list of canonical books.
The Council of Carthage in (419 A.D.) offered the same list of canonical books.
The Council of Florence (1441) adopted the canonical books.
The Council of Trent (1556) In reaction to the Protestant schism infallibly defined the canonical books currently used as the Vulgate.
JoeT