Territorial change of Celtic Britons (Brythons)

“Celtic Britons”(Brythons) — appears in this map’s data from AD 439 to 1235. Its territory was largest in AD 439 – 440, at ≈ 208 thousand km².

Territory by period

PeriodArea
AD 439 – 440≈ 208 thousand km²
AD 441 – 450≈ 162 thousand km²
AD 451 – 451≈ 162 thousand km²
AD 452 – 454≈ 162 thousand km²
AD 455 – 461≈ 164 thousand km²
AD 462 – 468≈ 164 thousand km²
AD 469 – 479≈ 164 thousand km²
AD 480 – 522≈ 130 thousand km²
AD 523 – 533≈ 130 thousand km²
AD 534 – 539≈ 130 thousand km²
AD 540 – 554≈ 111 thousand km²
AD 555 – 568≈ 101 thousand km²
AD 569 – 576≈ 101 thousand km²
AD 577 – 586≈ 89 thousand km²
AD 587 – 591≈ 65 thousand km²
AD 592 – 611≈ 52 thousand km²
AD 612 – 616≈ 37 thousand km²
AD 617 – 625≈ 34 thousand km²
AD 626 – 632≈ 34 thousand km²
AD 633 – 633≈ 28 thousand km²
AD 634 – 637≈ 28 thousand km²
AD 638 – 643≈ 21 thousand km²
AD 644 – 859≈ 13 thousand km²
AD 860 – 869≈ 13 thousand km²
AD 870 – 874≈ 25 thousand km²
AD 875 – 877≈ 20 thousand km²
AD 878 – 935≈ 20 thousand km²
AD 936 – 946≈ 11 thousand km²
AD 947 – 959≈ 11 thousand km²
AD 960 – 979≈ 19 thousand km²
AD 980 – 1033≈ 19 thousand km²
AD 1034 – 1039≈ 18 thousand km²
AD 1040 – 1084≈ 18 thousand km²
AD 1085 – 1098≈ 7,888 km²
AD 1099 – 1226≈ 7,801 km²
AD 1227 – 1235≈ 5,341 km²
AD 439AD 1235

Outline at its largest extent

Outline of the territory in AD 439 – 440 (map drawing). Neighbouring countries are not drawn.

Area and rank by frame

For each frame in which borders change: this country’s territory and its rank by area among the countries that have territory in that frame.

FrameAreaRank
AD 439≈ 208 thousand km²19 of 50
AD 441≈ 162 thousand km²21 of 50
AD 443≈ 162 thousand km²22 of 51
AD 451≈ 162 thousand km²21 of 50
AD 452≈ 162 thousand km²21 of 50
AD 455≈ 164 thousand km²21 of 52
AD 458≈ 164 thousand km²21 of 52
AD 459≈ 164 thousand km²20 of 52
AD 462≈ 164 thousand km²20 of 54
AD 469≈ 164 thousand km²20 of 55
AD 476≈ 164 thousand km²19 of 57
AD 480≈ 130 thousand km²25 of 57
AD 490≈ 130 thousand km²25 of 55
AD 500≈ 130 thousand km²26 of 54
AD 510≈ 130 thousand km²28 of 53
AD 523≈ 130 thousand km²28 of 54
AD 534≈ 130 thousand km²28 of 56
AD 536≈ 130 thousand km²28 of 56
AD 540≈ 111 thousand km²31 of 64
AD 546≈ 111 thousand km²31 of 64
AD 555≈ 101 thousand km²32 of 67
AD 561≈ 101 thousand km²33 of 68
AD 567≈ 101 thousand km²32 of 68
AD 569≈ 101 thousand km²31 of 68
AD 577≈ 89 thousand km²33 of 70
AD 587≈ 65 thousand km²41 of 67
AD 592≈ 52 thousand km²42 of 70
AD 602≈ 52 thousand km²39 of 69
AD 612≈ 37 thousand km²40 of 68
AD 617≈ 34 thousand km²39 of 65
AD 623≈ 34 thousand km²43 of 69
AD 626≈ 34 thousand km²43 of 67
AD 627≈ 34 thousand km²43 of 67
AD 628≈ 34 thousand km²43 of 65
AD 629≈ 34 thousand km²46 of 68
AD 630≈ 34 thousand km²47 of 68
AD 633≈ 28 thousand km²46 of 69
AD 634≈ 28 thousand km²45 of 66
AD 638≈ 21 thousand km²52 of 71
AD 641≈ 21 thousand km²52 of 71
AD 644≈ 13 thousand km²57 of 74
AD 647≈ 13 thousand km²54 of 70
AD 656≈ 13 thousand km²53 of 69
AD 661≈ 13 thousand km²52 of 68
AD 666≈ 13 thousand km²52 of 67
AD 674≈ 13 thousand km²52 of 69
AD 682≈ 13 thousand km²55 of 68
AD 692≈ 13 thousand km²56 of 67
AD 705≈ 13 thousand km²57 of 68
AD 710≈ 13 thousand km²57 of 69
AD 718≈ 13 thousand km²56 of 69
AD 724≈ 13 thousand km²55 of 69
AD 732≈ 13 thousand km²53 of 67
AD 741≈ 13 thousand km²55 of 71
AD 750≈ 13 thousand km²60 of 76
AD 751≈ 13 thousand km²61 of 77
AD 755≈ 13 thousand km²62 of 79
AD 757≈ 13 thousand km²60 of 76
AD 763≈ 13 thousand km²58 of 74
AD 768≈ 13 thousand km²59 of 75
AD 772≈ 13 thousand km²58 of 72
AD 775≈ 13 thousand km²58 of 73
AD 778≈ 13 thousand km²59 of 72
AD 783≈ 13 thousand km²59 of 73
AD 788≈ 13 thousand km²55 of 68
AD 793≈ 13 thousand km²62 of 78
AD 800≈ 13 thousand km²63 of 77
AD 806≈ 13 thousand km²60 of 73
AD 814≈ 13 thousand km²63 of 76
AD 825≈ 13 thousand km²64 of 77
AD 830≈ 13 thousand km²63 of 77
AD 840≈ 13 thousand km²64 of 80
AD 850≈ 13 thousand km²67 of 86
AD 860≈ 13 thousand km²72 of 89
AD 866≈ 13 thousand km²76 of 95
AD 870≈ 25 thousand km²63 of 94
AD 875≈ 20 thousand km²71 of 97
AD 876≈ 20 thousand km²71 of 97
AD 878≈ 20 thousand km²72 of 100
AD 880≈ 20 thousand km²73 of 102
AD 882≈ 20 thousand km²71 of 101
AD 884≈ 20 thousand km²70 of 102
AD 886≈ 20 thousand km²72 of 104
AD 887≈ 20 thousand km²76 of 107
AD 888≈ 20 thousand km²77 of 108
AD 892≈ 20 thousand km²77 of 108
AD 896≈ 20 thousand km²78 of 109
AD 898≈ 20 thousand km²83 of 115
AD 899≈ 20 thousand km²84 of 117
AD 900≈ 20 thousand km²83 of 114
AD 911≈ 20 thousand km²90 of 123
AD 922≈ 20 thousand km²84 of 117
AD 926≈ 20 thousand km²81 of 112
AD 936≈ 11 thousand km²92 of 116
AD 947≈ 11 thousand km²96 of 117
AD 960≈ 19 thousand km²90 of 118
AD 961≈ 19 thousand km²90 of 119
AD 962≈ 19 thousand km²92 of 120
AD 970≈ 19 thousand km²89 of 115
AD 980≈ 19 thousand km²85 of 111
AD 990≈ 19 thousand km²91 of 126
AD 1000≈ 19 thousand km²89 of 126
AD 1003≈ 19 thousand km²87 of 125
AD 1010≈ 19 thousand km²85 of 130
AD 1015≈ 19 thousand km²87 of 141
AD 1018≈ 19 thousand km²87 of 138
AD 1028≈ 19 thousand km²83 of 130
AD 1034≈ 18 thousand km²84 of 129
AD 1040≈ 18 thousand km²85 of 136
AD 1046≈ 18 thousand km²83 of 136
AD 1056≈ 18 thousand km²98 of 146
AD 1066≈ 18 thousand km²96 of 138
AD 1072≈ 18 thousand km²98 of 138
AD 1085≈ 7,888 km²114 of 137
AD 1094≈ 7,888 km²116 of 135
AD 1099≈ 7,801 km²116 of 139
AD 1111≈ 7,801 km²119 of 140
AD 1126≈ 7,801 km²117 of 138
AD 1139≈ 7,801 km²120 of 140
AD 1147≈ 7,801 km²121 of 148
AD 1152≈ 7,801 km²117 of 140
AD 1169≈ 7,801 km²112 of 137
AD 1177≈ 7,801 km²111 of 136
AD 1188≈ 7,801 km²105 of 134
AD 1192≈ 7,801 km²107 of 132
AD 1202≈ 7,801 km²107 of 135
AD 1206≈ 7,801 km²122 of 149
AD 1210≈ 7,801 km²124 of 146
AD 1216≈ 7,801 km²122 of 143
AD 1220≈ 7,801 km²122 of 143
AD 1227≈ 5,341 km²127 of 139

Its highest rank was in AD 439: number 50 of 19.

Neighbouring countries

In order of the number of frames in which they share a border (a parent state, its colonies and other names of the same country are counted as one group).

Territory exchanged with

Computed from changes in territory between frames (only changes of about 20,000 km² or more are counted; these are not actual routes of advance). Top 1 by area.

FrameOther countryArea
AD 480lostAnglo-Saxon England≈ 34 thousand km²

Wikipedia summary

The Britons (reconstructed P-Celtic *Pritanī, Latin: Britanni, Welsh: Brythoniaid), also known as Celtic Britons or ancient Britons, were the Celtic people who inhabited Great Britain from at least the British Iron Age until the High Middle Ages, at which point they diverged into the Welsh, Cornish, and Bretons (among others).

Wikipedia (English) “Celtic Britons”, introduction (first sentences) · text under CC BY-SA 4.0 · read more on Wikipedia

Show on the map — open the AD 439 frame