| DATE | EVENTS. | EMPEROR. |
| B.C. | | |
| 350 (?) | Pytheas discovers Britain [I.D. 1] | |
| 100 (?) | Divitiacus Overlord of Britain (?) | |
| [II. B. 4] | |
| Gauls settle on Thames and Humber | |
| (?) [I.F. 4] | |
| Posidonius visits Britain [I.D. 3] | |
| Birth of Julius Caesar [II. A. 6] | |
| 58 | Caesar conquers Gaul [II. A. 9] | |
| 56 | Sea-fight with Veneti and Britons | |
| [II. B. 3] | |
| 55 | First invasion of Britain | |
| [II. C., D.] | |
| Cassivellaunus Overlord of Britain | |
| (?) [II. F. 3] | |
| Mandubratius, exiled Prince of | |
| Trinobantes, appeals to Caesar (?) | |
| [II. E. 10] | |
| 54 | Second Invasion of Britain | |
| [II. E., F., G.] | |
| 52 | Revolt of Gaul. Commius, Prince | |
| of Arras, flies to Britain and | |
| reigns in South-east [III. A. 1] | |
| 44 | Caesar slain [II. G. 9] | |
| 32 | Battle of Actium [III. A. 6] | Augustus. |
| About this time the sons of Commius | |
| reign in Kent, etc., Addeomarus | |
| over Iceni, and Tasciovan | |
| at Verulam [III. A. 1] | |
| A.D. | About this time the Commian | |
| princes are overthrown | |
| [III. A. 2] | |
| Cymbeline, son of Tasciovan, becomes | |
| Overlord of Britain | |
| [III. A. 4]. Commians appeal to | |
| Augustus [III. A. 5] | |
| 14 | Death of Augustus | Tiberius. |
| 29 | Consulship of the Gemini. The | |
| Crucifixion (?) | |
| 37 | Death of Tiberius | Caligula. |
| 40 (?) | Cymbeline banishes Adminius, | |
| who appeals to Rome [III. A. 5] | |
| Caligula threatens invasion | |
| [III. A. 6] | |
| 41 | Caligula poisoned [III. A. 9] | Claudius. |
| Death of Cymbeline (?). His son | |
| Caradoc succeeds | |
| 43 | Antedrigus and Vericus contend | |
| for Icenian throne: Vericus appeals | |
| to Rome [III. A. 9] | |
| 44 | Claudius subdues Britain [III. B.] | |
| Cogidubnus, King in South-east, | |
| made Roman Legate [III. C. 8] | |
| 45 | Triumph of Claudius | |
| [III. C. 1, 2] | |
| 47 | Ovation of Aulus Plautius, conqueror | |
| of Britain. [III. C. 2] | |
| 48 | Vespasian and Titus crush British | |
| guerrillas [III. C. 3] | |
| 50 | Britain made "Imperial" Province. | |
| Ostorius Pro-praetor | |
| [III. C. 9] | |
| Icenian revolt crushed [III. D. | |
| 1-6]. | |
| Camelodune a colony [III. D. 8] | |
| 51 | Silurian revolt under Caradoc | |
| [III. D. 7, 8] | |
| 52 | Caradoc captive [III. D. 9] | |
| 53 | Uriconium and Caerleon founded | |
| [III. D. 12] | |
| 54 | Death of Ostorius [III. D. 11] | |
| 55 | Didius Gallus Pro-praetor. Last | |
| Silurian effort [III. D. 13] | |
| Death of Claudius [III. D. 13] | Nero. |
| 56 (?) | Aulus Plautius marries Pomponia | |
| Graecina [V.E. 10] | |
| 61 | Suetonius Paulinus Pro-praetor | |
| [III. E. 7] | |
| Massacre of Druids in Mona | |
| [III. E. 8, 9] | |
| Boadicean revolt [III. E. 2-13]. | |
| St. Peter in Britain (?) [V.E. 5] | |
| 62 | Turpiliannus Pro-praetor. "Peace" | |
| in Britain [III. E. 13] | |
| 63 (?) | Claudia Rufina Marries Pudens | |
| [V.E. 9] | |
| 64 | Burning of Rome. First Persecution. | |
| St. Paul in Britain (?) | |
| [V.E. 4] | |
| 65 | Aristobulus Bishop in Britain (?) | |
| [V.E. 5] | |
| 68 | Death of Nero (June 10) | Galba. |
| Galba slain (Dec. 16) | Civil War between |
| 69 | Otho slain (April 20) | Otho and Vitellius. |
| Vitellius slain (Dec. 20) | |
| British army under Agricola | Vespasian. |
| pronounces for Vespasian | |
| [III. F. 1] | |
| 70 | Cerealis Pro-praetor. Brigantes | |
| subdued by Agricola [III. F. 1] | |
| Destruction of Jerusalem | |
| [IV. C. 5] | |
| 75 | Frontinus Pro-praetor. Silurians | |
| subdued by Agricola [III. F. 2] | |
| 78 | Agricola Pro-praetor. Ordovices | |
| and Mona subdued [III. F. 3] | |
| 79 | Agricola Latinizes Britain [III. | Titus. |
| F. 4]. Vespasian dies | |
| 80 | Agricola's first Caledonian campaign | |
| [III. F. 5]. | |
| 81 | Agricola's rampart from Forth to | Domitian. |
| Clyde [III. F. 7]. Titus dies | |
| 82 | Agricola invades Ireland (?) [III. | |
| F. 5] | |
| 83 | Agricola advances into Northern | |
| Caledonia [III. F. 5] | |
| First circumnavigation of Britain | |
| [III. F. 7] | |
| 84 | Agricola defeats Galgacus [III. | |
| F. 6], resigns and dies [III. F. 7] | |
| 95 | Second persecution. Flavia Domitilla | |
| [V.E. 11] | |
| 96 | Domitian slain | Nerva. |
| 98 | Nerva dies | Trajan. |
| 117 | Trajan dies | Hadrian. |
| 120 | Hadrian visits Britain and builds Wall | |
| [IV. D. 1] | |
| Britain divided into "Upper" and | |
| "Lower" [IV. D. 3] | |
| First "Britannia" coinage [IV. D. 4] | |
| 138 | Hadrian dies | Antoninus Pius. |
| 139 | Lollius Urbicus, Legate in Britain, | |
| replaces Agricola's rampart by turf | |
| wall from Forth to Clyde [IV. D. 5] | |
| 140 | Britain made Pro-consular [IV. E. 5] | |
| 161 | Antoninus dies | Marcus Aurelius. |
| 180 | British Church organized by Pope | |
| Eleutherius (?) [V.E. 12] | |
| Marcus Aurelius dies | Commodus. |
| 181 | Caledonian invasion driven back by | |
| Ulpius Marcellus [IV. E. 1] | |
| 184 | Commodus "Britannicus" [IV. E. 1] | |
| 185 | British army mutinies against reforms | |
| of Perennis [IV. E. 1] | |
| 187 | Pertinax quells mutineers [IV. E. 3] | |
| 192 | Pertinax superseded by Junius Severus | |
| [IV. E. 3] | |
| Death of Commodus | Interregnum. |
| 193 | Pertinax slain by Julianus and Albinus. | Pertinax; Julianus; |
| Julianus slain | Albinus; Severus. |
| Severus proclaimed. Albinus Emperor in | |
| Britain [IV. E. 3] | |
| 197 | British army defeated at Lyons. | Severus. |
| Albinus slain [IV. E. 3] | |
| 201 | Vinius Lupus, Pro-praetor, buys off | |
| Caledonians [IV. E. 4] | |
| 208 | Caledonian invasion. Severus comes to | |
| Britain [IV. E. 5] | |
| 209 | Severus overruns Caledonia | |
| [IV. E. 5] | |
| 210 | Severus completes Hadrian's Wall | |
| [IV. E. 6] | |
| 211 | Severus dies at York [IV. G. 2] | Caracalla. |
| | Geta. |
| 212 | Geta murdered [IV. G. 2] | Caracalla. |
| 215 (?) | Roman citizenship extended to | |
| British provincials [IV. G. 2] | |
| (?) | Itinerary of Antonius [IV. A. 7] | |
| 217 | Caracalla slain | Macrinus. |
| 218 | Macrinus slain | Helagabalus. |
| 222 | Helagabalus slain | Alexander Severus. |
| 235 | Alexander Severus slain | Maximin. |
| 238 | Maximin slain | Gordian. |
| 244 | Gordian slain | Philip. |
| 249 | Philip slain | Decius. |
| 251 | Decius slain | Gallus. |
| 254 | Gallus slain | Valerian. |
| | {Gallienus. |
| 258 | Postumus proclaimed Emperor in | |
| Britain [V.A. 1] | |
| 260 | Valerian slain | Gallienus. |
| 265 | Victorinus associated with | |
| Postumus [V.A. 1] | |
| 268 | Gallienus slain | Tetricus. |
| 269 | Tetricus slain | Claudius Gothicus. |
| 270 | Claudius Gothicus dies | Aurelian. |
| 273 (?) | Constantius Chlorus marries | |
| Helen, a British lady [V.A. 6] | |
| 274 | Constantine the Great born at | |
| York [V.A. 6] | |
| 275 | Aurelian slain | Tacitus. |
| 276 | Tacitus slain | Florianus. |
| Florianus slain | Probus. |
| 277 | Vandal prisoners deported to | |
| Britain [V.A. 1] | |
| 282 | Probus slain | Carus. |
| 283 | Carus dies | Numerian. |
| 284 | Numerian dies | Carinus. |
| 285 | Carinus dies | Diocletian. |
| | Maximian. |
| 286 | Carausius, first "Count of the | |
| Saxon Shore," becomes Emperor | |
| in Britain [V.A. 3] | |
| 292 | Constantine and Galerius "Caesars" | |
| [V.A. 5] | |
| 294 | Carausius murdered by Allectus | |
| [V.A. 4] | |
| 296 | Constantius slays Allectus and | |
| recovers Britain [V.A. 7, 8] | |
| Britain divided into four "Diocletian" | |
| Provinces [V.A. 9] | |
| 303 | Tenth Persecution. Martyrdom | |
| of St. Alban [V.A. 11] | |
| 305 | Diocletian and Maximian abdicate | Constantius. |
| [V.A. 12] | Galerius. |
| 306 | Constantius dies at York [V.A. | |
| 13]. Constantine, Galerius, | |
| Maxentius, Licinius, etc., contend | Interregnum. |
| for Empire [V.A. 14] | |
| 312 | Constantine with British Army | |
| wins at Milvian Bridge, and | |
| embraces Christianity [V.A. 14] | Constantine. |
| 314 | Council of Arles [V.E. 14] | |
| 325 | Council of Nicaea [V.B. 1] | |
| | Constantine II. |
| 337 | Constantine dies | Constantius II. |
| | Constans. |
| 340 | Constantine II. dies | |
| 343 | Constans and Constantius II. visit | |
| Britain [V.B. 1] | |
| 350 | Constans slain. Usurpation of | Constantius II. |
| Magnentius in Britain [V.B. 3] | |
| 353 | Magnentius dies [V.B. 3] | |
| 358 | Britain under Julian. Exportation | |
| of corn [V.B. 4] | |
| 360 | Council of Ariminum [V.E. 14] | |
| 361 | Death of Constantius [V.B. 6] | Julian. |
| 362 | Lupicinus, Legate in Britain, repels | |
| first attacks of Picts | |
| and Scots [V.B. 5] | |
| 363 | Julian dies | Valentinian. |
| | Valens. |
| 365 | Saxons, Picts, and Scots ravage | |
| shores of Britain [V.B. 7] | |
| | Valentinian. |
| 366 | Gratian associated in Empire | Valens. |
| | Gratian. |
| 367 | Great barbarian raid on Britain | |
| Roman commanders slain | |
| [V.B. 7] | |
| 368 | Theodosius, Governor of Britain, | |
| expels Picts and Scots | |
| [V.B. 7] | |
| 369 | Theodosius recovers Valentia | |
| [V.B. 7] | |
| 374 | Saxons invade Britain [V.B. 8] | |
| | Valens. |
| 375 | Valentinian dies | Gratian. |
| | {Valentinian II. |
| | Gratian. |
| 378 | Valens slain. Theodosius associated | Valentinian II. |
| in Empire | Theodosius. |
| 383 | Gratian slain. British Army proclaims | Valentinian II. |
| Maximus and conquer | Theodosius. |
| Gaul [V.C. 1] | |
| 387 | British Army under Maximus take | |
| Rome [V.C. 1] | |
| 388 | Maximus slain. First British | |
| settlement in Armorica (?) [V. | |
| C. 1] | |
| 392 | Valentinian II. slain. Penal laws | Theodosius. |
| against Heathenism | |
| 394 | Ninias made Bishop of Picts by | |
| Pope Siricius (?) [V.F. 1] | |
| 395 | Death of Theodosius | Arcadius. |
| | Honorius. |
| 396 | Stilicho sends a Legion to protect | |
| Britain (?) [V.C. 1] | |
| | Arcadius. |
| 402 | Theodosius II. associated in Empire | Honorius. |
| | Theodosius II. |
| 406 | Stilicho recalls Legion to meet | |
| Radagaisus [V.C. 2] | |
| 'Notitia' composed (?) [V.C. 3-9] | |
| German tribes flood Gaul [V.C. 2] | |
| 407 | British Army proclaim Constantine | |
| III. and reconquer Gaul [V.C. | |
| 10] | |
| 408 | Arcadius dies. Constantine III. | Honorius. |
| recognized as "Augustus" | Theodosius II. |
| | Constantine III. |
| 410 | Visigoths under Alaric take Rome | |
| [V.C. 11] | |
| 411 | Constantine III. slain | Honorius. |
| | Theodosius II. |
| 413 (?) | Pelagian heresy arises in Britain | |
| [V.F. 3] | |
| 415 (?) | Rescript of Honorius to the Cities | |
| of Britain [V.C. 11] | |
| 423 | Death of Honorius | Theodosius II. |
| 425 | Valentinian III., son of Galla | Theodosius II. |
| Placidia, Emperor of West [V.D. 3] | Valentinian III. |
| 429 (?) | SS. Germanus and Lupus sent to | |
| Britain by Pope Celestine (?) | |
| [V.F. 4] | |
| 432 (?) | St. Patrick sent to Ireland by | |
| Pope Celestine [V.F. 2] | |
| 435 (?) | Roman Legion sent to aid Britons (?) | |
| 436 (?) | Roman forces finally withdrawn (?) | |
| 446 | Vain appeal of Britons to Actius (?) | |
| [V.D. 2] | |
| 447 (?) | The Alleluia Battle [V.F. 4] | |
| 449 (?) | Hengist and Horsa settle in | |
| Thanet (?) [V.D. 3] | |
| 450 (?) | English defeat Picts at Stamford(?) | |
| [V.B. 2] | |
| Theodosius II. dies | Valentinian III. |
| 455 (?) | Battle of Aylesford begins English | |
| conquest of Britain (?) [V.D. 2] | |