About this map

How a patchwork of Anglo-Saxon kingdoms became one England: the rival powers of Northumbria, Mercia and Wessex, the Great Heathen Army and the Danelaw, the reconquest by Alfred's children and grandson Æthelstan, the Danish kings Sweyn and Cnut, and the Norman conquest up to the fall of Ely. Early medieval frontiers were never surveyed, so borders are drawn soft and follow later shire boundaries; overlordship is shown only where a kingdom was actually absorbed. Sources: Anglo-Saxon Chronicle; Bede, Ecclesiastical History; Wikipedia articles on the kingdoms, the Great Heathen Army, the Danelaw, Æthelflæd, Edward the Elder, Æthelstan, Cnut and the Norman Conquest; borders from Natural Earth admin units.

Text version: https://www.movingpolygons.com/map/chrisjager/the-making-of-england-6001071.md

Timeline

DateWhat the map shows
600600 · Many kingdoms; Britons hold the west
617617 · Edwin unites Northumbria, takes Elmet
645645 · Penda's Mercia; Deira breaks away
15 Nov 655655 · Winwæd: Penda killed, Northumbria supreme
679679 · Trent: Mercia whole again, with Lindsey
710710 · Ine of Wessex pushes into Devon
731731 · Æthelbald of Mercia, overlord of the south
790790 · Offa's Mercia at its height; the Dyke
826826 · After Ellendun: Wessex takes the south-east
865865 · The Great Heathen Army lands
21 Mar 867867 · York falls to the Great Army
20 Nov 869869 · East Anglia falls; King Edmund killed
23 Apr 871871 · Year of battles; Alfred becomes king
874874 · Mercia broken: Burgred flees to Rome
1 Sep 877877 · Danes share out eastern Mercia
6 Jan 878Jan 878 · Chippenham: Alfred flees to Athelney
10 May 878May 878 · Edington: Alfred defeats Guthrum
886886 · Alfred takes London; treaty with Guthrum
911911 · Edward takes London and Oxford
1 Nov 917917 · Edward and Æthelflæd break the Danelaw
1 Dec 918918 · Æthelflæd dies; Edward takes Mercia
920920 · Edward reaches the Mersey and the Peak
12 Jul 927927 · Æthelstan takes York: King of the English
941941 · Olaf of Dublin retakes York and the Boroughs
945945 · Edmund wins back the Boroughs and York
948948 · Eric Bloodaxe, last king in York
954954 · Eric driven out: one English kingdom
11 May 973973 · Edgar crowned at Bath; Lothian to the Scots
15 Aug 1013Aug 1013 · Sweyn Forkbeard: the north submits
25 Dec 1013Dec 1013 · Sweyn king; Æthelred flees
15 Apr 10141014 · Sweyn dies; Æthelred returns
1 Nov 1016Oct 1016 · Assandun: England split with Cnut
30 Nov 1016Nov 1016 · Edmund dies; Cnut king of all England
8 Jun 10421042 · Edward the Confessor: the old line returns
10571057 · Earls rule; Gruffydd unites Wales
25 Sep 106625 Sep 1066 · Stamford Bridge: Hardrada killed
14 Oct 106614 Oct 1066 · Hastings: Harold killed
25 Dec 1066Christmas 1066 · William crowned
1 Oct 10681068 · Exeter falls; castles in the Midlands
1 Mar 10701070 · Harrying of the North; Chester taken
1 Oct 10711071 · Ely falls: the conquest is complete

Layers

Picts and Scots → Kingdom of Alba · Northern Britons (Strathclyde, Rheged, Elmet) · Welsh kingdoms · Dumnonia → Cornwall · Northumbria (Bernicia; Bamburgh after 867) · Deira · Mercia · East Anglia · Essex · Kent · Sussex · Wessex → Kingdom of England · Scandinavian York (Jórvík) · Danish Mercia (Five Boroughs) · Danish East Anglia (Guthrum's kingdom) · England under Danish kings (Sweyn, Cnut and sons) · Norman control · The Great Heathen Army · Harald Hardrada's Norwegians · Harold Godwinson's army · William of Normandy's army

Events

  • 600, Bamburgh (Bebbanburg): Coastal rock fortress and royal seat of the Bernician kings, capital of Bernicia and a key power centre of Northumbria; later held by Anglo-Saxon and Danish-era earls of Bamburgh.
  • 603, Battle of Degsastan: Aethelfrith of Bernicia defeats Aedan mac Gabrain of Dál Riata; Northumbrian pressure on the Gaels. Exact site is uncertain.
  • 616, Battle of Chester: Aethelfrith defeats Powys and kills monks of Bangor-is-y-coed; opens the route between Welsh Wales and the north Britons.
  • 616, Battle of the River Idle: Raedwald of East Anglia kills Aethelfrith of Northumbria and installs Edwin; East Anglian overlordship at its height.
  • 625, Sutton Hoo ship burial: Royal ship burial of the Wuffingas dynasty, probably King Raedwald; the richest early English grave find.
  • 633, Battle of Hatfield Chase: Cadwallon of Gwynedd and Penda of Mercia kill Edwin of Northumbria; Northumbria briefly splits into Bernicia and Deira.
  • 634, Battle of Heavenfield: Oswald of Bernicia defeats Cadwallon near Hadrian's Wall, reunites Bernicia and Deira and invites Aidan from Iona.
  • 642, Battle of Maserfield: Penda of Mercia kills Oswald of Northumbria, probably at Oswestry. Site traditional, not proven.
  • 655, Battle of the Winwaed: Oswiu of Northumbria kills Penda near Leeds (site uncertain) and briefly rules Mercia; Mercia then revolts in 658.
  • 658, Battle of Peonnum: Cenwalh of Wessex defeats the Britons, probably at Penselwood, and drives them to the Parrett; eastern Dumnonia lost.
  • 664, Synod of Whitby: Oswiu decides for Roman Easter dating over Iona's; Northumbrian church aligns with Rome.
  • 679, Battle of the Trent: Mercia under Aethelred beats Ecgfrith of Northumbria; Lindsey passes to Mercia. Site on the Trent in Lindsey, unlocated.
  • 20 May 685, Battle of Nechtansmere (Dun Nechtain): Picts under Bridei destroy Ecgfrith's army and kill him; Northumbria's northward expansion ends at the Forth. Traditional site Dunnichen, Angus.
  • 710, Ine defeats Geraint of Dumnonia: Ine of Wessex beats King Geraint at Llongborth (site uncertain) and pushes the border toward Exeter and the Exe.
  • 731, Bede at Jarrow: Bede completes the Ecclesiastical History of the English People at Monkwearmouth-Jarrow, the main source for this era.
  • 750, Eadberht takes Kyle: Eadberht of Northumbria seizes the plain of Kyle (Ayrshire) from Alt Clut; later lost.
  • 779, Battle of Bensington: Offa of Mercia beats Cynewulf of Wessex and regains the Thames valley.
  • 785, Offa's Dyke: Roughly 64 miles of surviving earthwork on the Mercia/Wales border from Chepstow area to near Prestatyn; ditch on Welsh side. Traditionally Offa's work, not scientifically dated.
  • 787, Lichfield made an archbishopric: Offa gets a papal archbishopric for Lichfield, reducing Canterbury's authority over Mercia. Dissolved 803.
  • 8 Jun 793, Lindisfarne raid: Viking sack of Lindisfarne monastery; the traditional start of the Viking Age in Britain.
  • 794, Execution of Aethelberht II: Offa has King Aethelberht of East Anglia killed (tradition: at Sutton Walls near Hereford, L), absorbing East Anglia.
  • 825, Battle of Ellendun: Ecgberht of Wessex beats Beornwulf of Mercia near Wroughton, ending Mercian supremacy and opening Kent, Sussex, Surrey and Essex.
  • 829, Ecgberht reaches Dore: Northumbria submits to Ecgberht at Dore after he occupies Mercia; Ecgberht is called Bretwalda in the Chronicle.
  • 830, Wiglaf restores Mercia: Wiglaf regains Mercia from Ecgberht; Mercia never again dominates.
  • 838, Battle of Hingston Down: Ecgberht defeats the West Welsh and their Danish allies; Cornwall becomes a West Saxon vassal.
  • 851, Battle of Aclea: Aethelwulf and Aethelstan beat a great Viking army, probably in Surrey (Ockley). Site uncertain.
  • 865, Great Heathen Army lands in East Anglia: Viking army winters at Thetford after receiving horses; the start of the conquest of the kingdoms.
  • 867, Bamburgh (Bebbanburg): Seat of independent Bernician rulers 867-954: Ealdorman Eadwulf II (890-912), then Ealdred. The fictional Uhtred of Bebbanburg in The Last Kingdom is invented; the real Uhtred the Bold lived about 1000-1016.
  • 21 Mar 867, Battle of York: Northumbrians under Osberht and Ælla storm York but are crushed by Ivar and Halfdan; both kings killed.
  • 20 Nov 869, Edmund killed (Hoxne): King Edmund of East Anglia killed by the Great Army; Hoxne in Suffolk is the traditional site, disputed.
  • 5 Jan 871, Battle of Reading: Danes beat Æthelred and Alfred at their Reading camp.
  • 8 Jan 871, Battle of Ashdown: Alfred and Æthelred beat the Danes on the Berkshire Downs; Bagsecg killed. Exact site unknown, Ashdown House area used.
  • 22 Mar 871, Battle of Meretun: Danes beat Æthelred and Alfred at Meretun (Marden, Martin or Merton; site unknown). Æthelred dies April 871, Alfred king.
  • 1 May 871, Battle of Wilton: Alfred defeated by the Danes at Wilton, then buys peace; Danes leave Wessex.
  • 1 Dec 873, Repton winter camp: Great Army winters in the Mercian royal monastery; Burgred driven out 874, Ceolwulf II installed.
  • 878, Treaty of Wedmore: Peace after Edington: Guthrum baptised, leaves Wessex. Wedmore, Somerset. Distinct from the later Alfred-Guthrum treaty.
  • 878, Battle of Cynwit: Men of Devon beat Ubba's Danes; site disputed (Countisbury or Kenwith near Bideford). Countisbury used.
  • 6 Jan 878, Chippenham surprise: Guthrum surprises Alfred at Twelfth Night; Alfred escapes to the Somerset marshes.
  • 1 Mar 878, Alfred at Athelney: Alfred's refuge on a Somerset Levels island; fort built around Easter 878.
  • 1 May 878, Battle of Edington (Ethandun): Alfred defeats Guthrum; most favoured site Edington, Wiltshire (Wikipedia coordinates). Guthrum baptised at Aller about three weeks later.
  • 886, Treaty of Alfred and Guthrum: Boundary: up the Thames, up the Lea to its source, straight to Bedford, up the Ouse to Watling Street. Date uncertain (878-890). Lea source near Leagrave/Waulud's Bank, Luton (approx).
  • 886, Alfred takes London: Alfred retakes London and places it under Æthelred of Mercia; styles himself King of the Anglo-Saxons.
  • 893, Buttington: English and Welsh besiege a Danish army at Buttington near Welshpool (traditional identification, not verified).
  • 893, Farnham: Edward beats a Danish army at Farnham, Surrey (ASC 893; from memory, not verified on fetched pages).
  • 26 Oct 899, Alfred dies: Alfred dies; Edward the Elder succeeds, crowned at Kingston 8 June 900.
  • 13 Dec 902, Battle of the Holme: Æthelwold's East Anglian Danes beat Edward's Kentish force but Æthelwold is killed; location uncertain (Holme in the Fens, low confidence).
  • 5 Aug 910, Battle of Tettenhall: Mercian and West Saxon army destroys the Northumbrian Danes; kings Eowils, Halfdan and Ingwær killed.
  • 917, Tempsford stormed: Edward storms the Danish burh at Tempsford on the Ouse in Bedfordshire.
  • 918, Corbridge: Ragnall's Norse fight Constantine II's Scots and Northumbrians (Ealdred) at Corbridge on the Tyne.
  • 12 Jun 918, Æthelflæd dies: Lady of the Mercians dies at Tamworth; Edward takes direct control of Mercia Dec 918.
  • 927, Æthelstan takes York: On Sihtric's death Æthelstan takes York, becoming king of all England.
  • 927, Ealdred of Bamburgh: Ealdred, son of Eadwulf, attended Eamont Bridge 927; may have died 934.
  • 12 Jul 927, Eamont Bridge: Constantine II, Hywel Dda, Ealdred of Bamburgh and Owain of Strathclyde accept Æthelstan's overlordship.
  • 937, Brunanburh (site unknown): Æthelstan beats Olaf Guthfrithson, Constantine and Owain in autumn 937. Over forty sites proposed; Bromborough on the Wirral is the leading candidate. Marker is a best guess.
  • 954, Stainmore: Eric Bloodaxe's death on Stainmore is a later tradition; Wikipedia's Eadred article says only that York's magnates expelled him in 954 and he was killed soon after. Site approximate.
  • 11 May 973, Edgar crowned at Bath: Edgar and Aelfthryth consecrated at Bath Abbey on Whit Sunday; probably a display of overlordship of Britain.
  • 1 Jul 973, Kings submit to Edgar on the Dee: At Chester six to eight kings (incl. Kenneth II, Strathclyde and Welsh kings) allied or submitted; later sources say they rowed him on the Dee. Month approximate; some see a parley of equals.
  • 10 Aug 991, Battle of Maldon: Byrhtnoth's Essex fyrd beaten by Vikings on the Blackwater; Danegeld followed. Date from memory.
  • 3 Feb 1014, Sweyn dies at Gainsborough: Sweyn died after about two months as king; the fleet chose Cnut; the English recalled Aethelred.
  • 1016, Uhtred the Bold killed: Uhtred of Bamburgh, earl of Northumbria, killed on his way to submit to Cnut by Thurbrand the Hold (traditionally Wighill, near Tadcaster); historical basis of the fictional Uhtred. Place and date from memory.
  • 1016, Uhtred the Bold (real): Real Uhtred, son of Waltheof I, ruled Bamburgh c.1000-1018 and was ealdorman of Northumbria 1006-1016; the TV Uhtred is fictional.
  • 18 Oct 1016, Battle of Assandun (site disputed): Decisive Cnut victory. Site probably Ashingdon near Rochford, Essex (shown); Ashdon near Saffron Walden (52.05N, 0.31E) is the main rival.
  • 1 Nov 1016, Alney partition: Edmund and Cnut met on the Severn island near Deerhurst; Cnut got Mercia/north, Edmund Wessex. Sources differ. Edmund d. 30 Nov.
  • 1 Aug 1018, Battle of Carham: Scots (Malcolm II) and Cumbrians (Owen the Bald) beat the Northumbrians on the Tweed. Probably Aug 1018 (comet), maybe 1016; link to Lothian is disputed.
  • 12 Nov 1035, Cnut dies at Shaftesbury: Cnut d. 12 Nov 1035; buried Winchester; his sons split the realm.
  • 1063, Rhuddlan raid on Gruffydd: Harold raids Gruffydd's court at Rhuddlan; Gruffydd flees by sea and is killed in Snowdonia in summer 1063.
  • 20 Sep 1066, Battle of Fulford: Hardrada and Tostig beat Edwin and Morcar outside York.
  • 25 Sep 1066, Battle of Stamford Bridge: Harold destroys the Norwegian army; Hardrada and Tostig killed.
  • 14 Oct 1066, Battle of Hastings: Fought at Senlac Hill, now Battle; Harold killed.
  • 10 Dec 1066, Submission at Berkhamsted: Edgar Atheling, Edwin, Morcar and the Londoners submit to William.
  • 1 Feb 1068, Siege of Exeter: William besieges rebels around Harold's mother Gytha; negotiated surrender; Rougemont castle built.
  • 1 Sep 1069, Rising at York: Danes and Northumbrian rebels take York's castles; William retakes and ravages it. Robert de Comines killed at Durham Jan 1069 (mini).
  • 25 Dec 1069, Harrying of the North: Winter 1069-70 devastation of Yorkshire and the land to the Tees; William holds Christmas at York.
  • 1 Oct 1071, Fall of Ely: Isle of Ely falls to William; Morcar imprisoned, Hereward escapes. Exact date uncertain (1071).