| 337-40 | CONTANTINE II, CONSTANTIUS & CONSTANS (sons of
Constantine I) |
| 340 | Constans defeats Constantine II and takes over the
West (including Britain) as well as his own territories
of Italy, Africa and Illyricum |
| 340-50 | Constans energetic in defending the Rhine and British
frontiers |
| 350 | Constans killed by a British-born barbarian officer,
Magnentius, who is proclaimed Augustus in
all Constans' territories except Illyricum |
| 353 | Magnentius committs suicide after losing Africa,
Italy and Spain to Constantius |
| 355 | Julian (cousin to the emperor) made caesar and sent
to Gaul |
| 357-60 | Julian given military command and successfully repels
Alamanni, conducts successful campaigns in enemy
territory and restores Rhine defenses |
| 359 | Sapor II of Persia defeats Asiatic barbarians/nomads
on northern border |
| 360-63 | JULIAN
Julian's pagan revival particularly popular in Britain
Raid in Britain causes Julian to dispatch 4 regiments |
| 363 | Julian dies in disasterous Persian campaign |
| 364 | VALENTINIAN AND VALENS
Raid in Britain |
| 365-75 | Valentinian in Gaul to deal with constant barbarian
pressure on the frontiers. Defeats Alamanni, Franks
and Saxons |
| 367 | Comes Theodosius (father of Theodosius the Great)
repels Picts, Scots and other invaders from Britain
with 4 regiments |
| 367 | GRATIAN (West) |
| 373 | Huns destroy Ostrogothic kdm in the Ukraine, then
attack Visigoths on Dneister. Germans fled to the
Danube and sought entry to Moesia or Thrace |
| 375 | Valentinian dies. Comes Theodosius executed |
| 375 | VALENTINIAN II (West) |
| 377 | Ill treatment of Goths by Roman officials leads to war |
| 378 | Battle of Adrianople - Emperor Valens killed |
| 379 | THEODOSIUS THE GREAT (East) |
| 382 | Theodosius signs foedus with Goths, who are quartered
in the Balkans |
| 383-408 | ARCADIUS (East) |
| 383 | British general Magnus Maximus proclaimed Augustus by
troops, crosses to Gaul and kills Gratian.
Maximus accepted by Britain, Gaul and Spain, recognised
by Theodosius |
| 387 | Maximus appoints son Victor caesar and takes Italy
from Valentinian II |
| 388 | Theodosius defeats Maximus and Arbogast, barbarian
general of Theodosius', recovers Gaul and executes
Victor. Valentinian II sent to Gaul with Arbogast |
| 392 | Arbogast murders Valentinian II and revolts, makes
Eugenius Augustus |
| 393 | Eugenius occupies Italy with senatorial support,
recognised in Spain and Africa |
| 393-423 | HONORIUS (West) |
| 394 | Theodosius and Stilicho defeat Arbogast and Eugenius at
the river Frigidus |
| 395 | Theodosius dies
Empire divided into East (Diocese of Dacia, Thrace,
Macedonia, Asia, Pontus, The Orient and Egypt) under
Arcadius and West (Rome, Italy, Pannonia, Africa, Spain,
Seven Provinces, Gaul, Britain) under Honorius.
Alaric and Visigoths revolt |
| 396 | Stilicho defeats Alaric in Greece |
| c.397 | Saxon raid repulsed by Stilicho |
| 403 | Stilicho takes troops from Britain to defend Italy
from Alaric |
| 406 | Rhine frontier over-run, 31st December |
| 407 | CONSTANTINE III (the usurper), proclaimed by British
garrison, crosses to Gaul (taking many troops with
him) and drives barbarians south |
| 410 | Alaric sacks Rome. Britons appeal to Honorius for aid
against barbarians and told to look to their own defence.
After this British tried to govern themselves after the
Imperial pattern |
| 411/2 | British victories over barbrians |
| 423-455 | VALENTINNIAN III (West) |
| c425-59 | VORTIGERN ruler in Britain |
| c428 | Saxon mercanaries recruited to garrison Britain against
barbarians |
| 433-54 | Aetius, general of Valentinian III, efective ruler of
Western Empire |
| 429 | Bishop Germanus of Auxerre visits Britain to fight Pelagian
heresy and leads campaign against Irish, Picts and Saxons
in Wales |
| c441/2 | Saxon mercenaries in Britain revolt |
| 446 | Aetius consul [British appeal to Aetius for help
against Saxons] |
| c.458 | massacre of the British councillors by Saxons |
| c.459 | British migration to Gaul [12,000 fighting men plus
dependents] |
| 460-75 | AMBROSIUS AURELIANUS leads British resistance |
| 475-515 | ARTHUR continues British resistance campaign against
Saxon invaders |
| 495 | battle of mons badonicus (Mt Badon). Partition of
Britain between British and Saxons |
| 515 | battle of Camlann [crooked vale]: death of Arthur,
and Medraut [Mordred] |
