Short answers, pulled from the story.
Medieval Latin emerged as the dominant written language across Roman Catholic Western Europe during the Middle Ages. It served as the administrative tongue in former Roman provinces like Mauretania, Numidia, and Africa Proconsularis under Vandal, Byzantine, and Romano-Berber rule until the Arab Conquest ended its dominance there.
Ecclesiastical Latin refers specifically to forms used by the Roman Catholic Church, whereas Medieval Latin encompasses all written Latin from the medieval period. Scholars debate when Late Latin ends and Medieval Latin begins, with some surveys starting around the middle of the 4th century while others point to the year 500 or even 900 when Romance languages began replacing written Latin.
Word order in Medieval Latin tended toward the vernacular language of the author rather than following Classical Latin patterns. Most vernaculars mandated Subject-Verb-Object order, making this structure more prevalent in medieval texts than the preferred Subject-Object-Verb arrangement of classical times.
The first half of the 5th century witnessed literary activities by great Christian authors Jerome who died on the 2nd of May 420 and Augustine of Hippo who lived from 354 to 430. Their texts profoundly influenced theological thought throughout the Middle Ages.
The diphthong ae usually collapsed into e or e caudata (ę), so puellae might appear as puelle. Similarly oe became e, transforming poena into pena and Oedipus into Edipus, while these orthographical changes reflected shifts in pronunciation and morphology.