West Saxon Genealogical Regnal List

In the article The Anglo-Saxon Chronicle and Arthur’s death it was stated Dumville derived the same date for the start of Cerdic’s reign. The following table illustrates the derivation.

WSGRL Reign Start ASC entries Discrepancy
Cerdic 16 538 519 19
Cynric 27 554 534 20
Ceawlin 7 581 560 21
Ceol 6 588 591 -3
Ceolwulf 17 594 597 -3
Cynegils 31 611 611 0
Cenwalh 31 642 643 -1
Seaxburh 1 673 672 1
Æscwine 2 674 674 0
Centwine 9 (10) 676 676 0
Cædwalla 3 (2) 685 685 0
Ine 38 688 688 0
Æthelheard 14 726 728 -2
Cuthred 16 740 741 -1
Sigebert 1 756 754 2
Cynewulf 29 757 755 2
Beorhtric 16 786 784 2
Egbert 37 802 800 2
Æthelwulf 16 (19) 839 836 3
Æthelbald 5 855 855 0
Æthelbert 6 860 860 0
Æthelred 5 866 866 0
Alfred 28 871 871 0

It can be seen from the discrepancy column that the only significant differences arise in the dating of the start of the reigns of Cerdic, Cynric and Ceawlin providing evidence that these dates were shifted earlier by one Metonic cycle in order to hide a period of Saxon defeats.