 John of Worcester 's Chronicon ex chronicis appears to have had a manuscript that was either [ A ] or similar to it ; he makes use of annals that do not appear in other versions , such as entries concerning Edward the Elder 's campaigns and information about Winchester towards the end of the chronicle . His account is often similar to that of [ D ] , though there is less attention paid to Margaret of Scotland , an identifying characteristic of [ D ] . He had the Mercian register , which appears only in [ C ] and [ D ] ; and he includes material from annals 979 – 982 which only appears in [ C ] . It is possible he had a manuscript that was an ancestor of [ D ] . He also had sources which have not been identified , and some of his statements have no earlier surviving source . 
