Latin Christians already had the Vetus Latina, a family of translations mostly from Greek. Hebrew learning among Latin clergy was scarce. After 410 the Western empire was politically broken; the books were not.

He thought Latin readers should hear the Hebrew truth of the Old Testament rather than only the Greek Septuagint, and that the existing Old Latin Gospels needed to be brought closer to Greek copies. The motive is linguistic and doctrinal. It is not a number.

A Dalmatian-born priest, scholar, and controversialist. He learned Greek in the East and Hebrew from Jewish teachers. Paula of Rome funded the Bethlehem houses. Damasus had commissioned the Gospel revision in 382. Jerome’s opponents and allies already filled Latin Christendom before 420.

Jerome of Stridon · Paula of Rome · Pope Damasus I

A death that closes a long workshop, not a single night of translation. The Hebrew Old Testament work is generally placed as complete around 405. Commentaries continued. The later one-volume Latin Bible is a collection: Jerome’s Hebrew Old Testament, his Gospel revision, and other books not all securely his.

Revision and translation, lemma by lemma, with notes on why a word was chosen. He compared Hebrew, the Greek of the Seventy, and the later Greek versions of Aquila, Symmachus, and Theodotion. Meaning had to survive a change of tongue.

The hinge is not a halo. It is a scholar dying in a house of books, having spent decades moving sense from Hebrew and Greek into Latin.

Bethlehem, in Palaestina Prima, in a monastery next to the Church of the Nativity. Not Rome in 420. Rome had been sacked in 410. Jerome wrote through that shock from the East. 30 September 420 in the received Western date. Some older notices say probably 420. Prosper is the principal chronological witness used here. The translation labour itself is the 380s through the 400s.

Death dated 30 September 420 · Bethlehem, Palaestina Prima

Jerome knew the cost of a word. He knew Jewish teachers, Greek copies, and Latin readers who would resist a new wording of familiar psalms. He knew controversy. He had already written against Pelagius.

He could not know that a Northumbrian pandect around 700, the Codex Amiatinus, would become a chief witness to the Latin text, nor that the Council of Trent in 1546 would declare a later Vulgate authentic for the Latin Church. He could not know this page.

Jerome’s biblical translations and revision, later collected as the Latin Vulgate

No autograph of 420 survives. What survives are later manuscripts of a Latin textual tradition he shaped. The Codex Amiatinus is an early eighth-century Northumbrian copy, not a Bethlehem object.

The object survives.

Prosper of Aquitaine’s Chronicon gives the death year. Jerome’s own prefaces, letters, and commentaries are the first record of the work. Later saints’ lives enlarge the man.

Latin liturgy, law, and schoolrooms carried his wording for a millennium. The name Vulgate is later. So is the simplification “he translated the Bible.”

Renaissance and Baroque painters made a cardinal in a study with a lion. Those pictures are later art. They are not evidence of 420.

A death year is not the year the Vulgate was made. Completing a translation around 405 and dying in 420 are different facts. Do not collapse them to fatten a Near Field.

It does not make 420 an x42 year. It does not prove that 42 attracts translators. It does not license cannabis-culture 420 as history.

Jerome belongs here because languages carry thought across centuries, and because 420 already had to be investigated once 1690 had been admitted as a contained form. He stands without the digits.

How does a thought survive a change of language?

1. 1. Prosper of Aquitaine. Epitoma Chronicon. Fifth-century chronicle giving Jerome’s death in 420. The Western feast on 30 September follows this dating.
2. 2. Jerome. Prefaces to the books of the Latin Bible, and selected letters. Statements of Hebraica veritas, the Gospel revision for Damasus I (from 382), and the turn from the Septuagint to Hebrew for the Old Testament, completed around 405.
3. 3. Weber, Robert, and Roger Gryson, eds. Biblia Sacra iuxta Vulgatam versionem. 5th ed. Stuttgart: Deutsche Bibelgesellschaft, 2007. Critical text of the Latin Vulgate tradition Jerome shaped; not an autograph of 420.
4. 4. Codex Amiatinus. Wearmouth-Jarrow, early eighth century. Biblioteca Medicea Laurenziana, Florence. Earliest nearly complete Latin Vulgate Bible. Later representation of the textual tradition, not a 420 object. See the record
5. 5. Kelly, J. N. D. Jerome: His Life, Writings, and Controversies. London: Duckworth, 1975. Standard English biography; used here for context of Bethlehem, Hebrew study, and the limits of later hagiography.

independent first · hard

Not important to the existing work before this search.

Eastern Jin had held the south after the north fell in the early fourth century. Great families constrained emperors. Liu Yu’s career is the Beifu army becoming the state.

Liu Yu already held the armies and the court. Abdication, in this political grammar, is how a usurper becomes a founder without pretending the last house never existed.

Liu Yu (363 to 422), posthumously Emperor Wu, a commander of the Beifu army who had risen from poverty. Sima Dewen, Emperor Gong, a Jin prince installed after Liu Yu had Emperor An killed in 419. The ritual of yielding was written so that a new house could claim continuity.

Liu Yu, Emperor Wu of Song · Sima Dewen, Emperor Gong of Jin

A forced abdication and a new dynastic name. Not a popular revolution. Not “another dynasty changed” as a shrug. The Jin had become a court that generals could make and unmake. Liu Yu had already restored it from Huan Xuan and campaigned north against Southern Yan and Later Qin. In 420 he kept the Mandate as his own.

Pressure through officials, a drafted edict of yielding, a new era name. The Song Shu and Zizhi Tongjian are later compiled histories. They are the surviving narrative, not a stenograph of the hall.

A year in which a southern empire changed its name, and a soldier became an ancestor.

Jiankang, on the Yangtze, capital of the southern court. Modern Nanjing. The northern plain was another map. 10 July 420 (dingmao day, sixth month, Yongchu 1) in the standard reconstruction from the Song Shu. The killing of Emperor An is 419, a neighbor, and stays there.

10 July 420 · Jiankang (modern Nanjing)

Court elites knew the ritual of abdication from earlier usurpations. They knew the north remained a threat and a prize.

They could not know the Southern Dynasties would run Song, Qi, Liang, Chen until 589, or that a stone qilin at Chuning would outlast the house.

Song Shu (Book of Song) and the stone qilin of the Chuning Mausoleum

The official history is later compilation. The surviving qilin statues at Liu Yu’s tomb near Nanjing are period stone, not a painted court scene.

The object survives.

Song Shu, Nan Shi, and Sima Guang’s Zizhi Tongjian. No 420 newspaper. Official historiography is the first continuous record.

Liu Yu died in 422. The Liu Song lasted until 479. Southern Dynasties chronology begins, in later textbooks, here.

A modern sentence that says “China changed dynasties” erases the split north, the ritual, and the army.

Do not treat 420 as the unification of China. It is a southern founding beside a northern empire.

It does not bind Jiankang to Bethlehem. Same modern year. Nothing more.

A political order was renamed. The year is independently major in East Asian chronology. The digits 420 are our later label, not Liu Yu’s reign title.

1. 1. Shen Yue. Song Shu (Book of Song). Official history of the Liu Song. Record of Liu Yu’s accession on 10 July 420 (Yongchu 1) at Jiankang, and of the ritual abdication of Emperor Gong.
2. 2. Sima Guang. Zizhi Tongjian. Compiled eleventh century. Narrative of the 419 killing of Emperor An and the 420 abdication; a later chronicle, not a 420 diary.
3. 3. Stone qilin statues at the Chuning Mausoleum, Qilin Town, Nanjing. Tomb of Liu Yu, Emperor Wu of Liu Song (d. 422). Period southern-dynasty sculpture. See the record

independent first · hard

Not important to the existing work before this search.

Since Shapur II’s death in 379, nobles and priests had often made and unmade kings. Yazdegerd’s long reign was, to some Romans, a peace.

Later factions needed a story about this king. Christians needed a protector. Priests needed a sinner. The succession needed a winner.

Yazdegerd I; his sons Shapur and Bahram; the wuzurgan and Magian clergy; al-Mundhir of al-Hira, who backed Bahram; Christian and Jewish communities inside Iran.

Yazdegerd I · Shapur IV · Bahram V · Khosrow the noble nominee

A royal death and a succession fight. Not a simple moral play in which tolerance dies and persecution is born on the same afternoon.

Coins continue. Literary sources split. Do not flatten hostile Magian memory and Syriac gratitude into one sentence.

A reign ends. The next year will be louder with war. This year holds the death and the scramble.

The Iranian plateau and Ctesiphon on the Tigris. Rome is the western neighbor, not the author of the year. 420 for the death, in the received king-list. Day and place contested (Gurgan or Tus). Bahram’s reign is counted 420 to 438. The Romano-Sasanian war is 421 to 422.

420, exact day not secure · Gurgan or Tus; then Ctesiphon

Courts knew that a dead shahanshah opened a hunt. They knew the 410 synod had made an Iranian church legally visible.

They could not know how later encyclopedias would title him, or that this project would refuse the cartoon of the tolerant king.

Silver drachm of Yazdegerd I

A surviving face of the reign: mural crown, crescent, mint. Metal from the lifetime, not a later painting of the death.

The object survives.

Coins; later Arabic and Persian histories; Movses Khorenatsi; Roman notices in Procopius and Agathias, some of them doubted even in antiquity.

Bahram V becomes the hunter-king of later romance. The 421 war with Rome ends in a peace that again names Christian worship. Neither is a 420 event.

“Tolerant king dies, persecution begins” is a sermon outline. Specialist chronology is messier, and is kept messy here.

Cause of death is not known with the same confidence as the year of death. Do not pick the horse because it is a better picture.

It does not make a triad with Jerome and Liu Yu into a single mechanism.

Power changing hands is independently worth a page. It is not evidence that 42 governs Iran.

What happens when power changes hands?

1. 1. Movses Khorenatsi. History of the Armenians. Fifth-century Armenian history. Notices Yazdegerd I’s death in 420 as by disease. Later Persian epic (Ferdowsi) gives a white horse near Tus; treated here as later legend, not as a first record.
2. 2. Encyclopaedia Iranica, s.v. “Yazdegerd I” and “Bahrām V Gōr.” Specialist frame for the 399 to 420 reign, the “Sinner” title in Magian memory, Christian notices of the 410 synod, and the succession through Shapur IV, Khosrow, and Bahram V. See the record
3. 3. Silver drachm of Yazdegerd I, Gurgan or Qum mint, 399 to 420. Classical Numismatic Group photograph. Lifetime coin, not a death scene. See the record
4. 4. Procopius. Wars, notices of Roman-Sasanian relations under Yazdegerd I. Agathias later questions parts of the Roman diplomatic legend. Used here as a limit, not as a proof of guardianship stories.

independent first · hard · contested

Not important to the existing work before this search.