CHRONOLOGICAL TABLE
FROM A. D. 426 to 1211: EXTRACTED from the RED BOOK of HERGEST.

From the age of Vortigern to the Battle of Badon, which Arthur and his nobles fought with the Saxons, when Arthur and his nobles were victorious, 128 years. [554]

From the Battle of Badon to that of Camlan, 22 years. [576]

From the Battle of Camlan to the death of Maelgwn, 10 years. [586]

From the death of Maelgwn to theBattle of Afderydd, when Gwrgi and Peredur were slain, 7 years. [593]

From the death of Gwrgi and Peredur to the Battle of Caerlleon, 9 years. [602]

From the Battle of Caerlleon to the Battle of Meigin, 14 years. [616]

From the Battle of Meigen to the time when Cadwaladr the Blessed went to Rome, 48 years. [664]

From Cadwaladr to the death of King Offa, 128 years. [792]

From Offa to the time, when Teganwy was burnt by lightning in the age of Owain ab Maredudd, 20 years. [812]

From the burning of Teganwy to the death of Merfyn Vrych, 33 years. [845]

From Merfyn to the time, when his son Rodri was slain, 27 years. [872]

From Rodri to the time when his son Anarawd revenged his death, 3 years. [875]

From the Battle of Conwy till Mervyn, the son of Rodri, was slain, 17 years. [892]

From the death of Mervyn to the death of Cadell, the son of Rodri, 10 years. [902]

From the death of Cadell to the death of Anarawd, 6 years. [903]

From Anarawd to Hywel ab Cadell's pilgrimage to Rome, 18 years. [926]

From Hywel's pilgrimage to his death, 19 years. [945]

From Hywel's death to the Battle of Carno, 7 years. [952]

From the Battle of Carno to the Battle of Idwal's sons, one year. [953]

From the Battle of Idwal's sons to the death of Owain, son of Hywel Dda, 24 years. [977]

From Owain's death to the reign of Cnud, his son, 27 years. [1004]

From Cnud to the Battle of Machawy, when Gruffydd, son of Llywelyn, was victorious, and the bishop of the English was slain, 42 years. [1046]

From the Battle of Machawy to the death of Gruffydd, 9 years. [1055]

(From the coming of Christ in the flesh to that year, 1055 years.)

From that year to the death of Gruffydd, son of Llywelyn, 6 years. [1061]

From Gruffydd's death to the arrival of William the Bastard in this island, 5 years; and he reigned 21 years. [1066]

From William the Bastard till Bleddyn ab Cynvyn was slain, 7 years. [1073]

From Bleddyn to the Battle of the Mountain of Carno, 6 years. There Gruffydd ab Cynan and Rhys ab Tewdwr conquered Trahaiarn, son of Caradawg . [1079]

From the Battle of the Mountain of Carno to the time, when Rhys ab Tewdwr was slain, 13 years. [1092]

From the death of Rhys to that of William the Red King, 7 years: he reigned, 13 years. [1099]

From the Red King to the death of Caradawg, the Monk, 25 years. [1124]

From Caradawg to the death of Cadwallon ab Gruffydd, and the death of Maredudd ab Bleddyn, 8 years. [1132]

(From the coming of Christ in the flesh to that year, 1133 years.) [1133]

From the death of Cadwallawn to the time, when Owain and Cadwaladr destroyed Aberteivi, 6 years. [1139]

From the destruction of Aberteivi to the slaughter of the French in Tal Moelvre, 20 years. [1159]

From the Battle of Tal Moelvre to the taking of the hostages in the wood of Ceiriog, 8 years. [1167]

From the Battle of the wood of Ceiriog to the sacking of Rhuddlan by Owain and Cadwaladr, 2 years. [1169]

From the sacking of Rhuddlan to the death of Owain, 5 years. [1174]

(Cadwaladr died after Owain one year, besides from Clement's Eve to Shrovetide.)

From Owain's death to the birth of Llywelyn ab lorwerth, 2 years and a half. [1176]

From the birth of Llywelyn to the time when Owain son of Madog was slain in the Battle of Gwern y Vinogl, 14 years. [1190]

From the death of Owain ab Madog to the Summer of the Irish, 7 years. [1197]

(In the preceding year happened the Battle of the Cretanau. The third year died Rodri son of Owain.)

From the Summer of the Irish to the taking of Paen Castle, 5 years. [1202]

(The preceding year Llywelyn destroyed Mold.)

Two years after the taking of Paen Castle died GrufFydd Cynan. [1204]

The next year after the death of Gruffydd ab Cynan died David son of Owain. [1205]

From the death of David to the interdiction of Mass over England and Wales in consequence of the disagreement of King John and Stephen, Abp. of Canterbury, 5 years. [1210]

(That interdiction continued 7 years over England and 5 years over Wales.)

The next year, succeeding the first year of the interdiction of Mass, Llywelyn ab lorwerth and Hywel ab Gruffydd went to Rome with John King of England, that the king might do homage to John King of England. [1211]

SOURCE
The Cambro-Briton, vol. II. pp. 219-222. 1821.