▁civil ▁war ▁triggered ▁by ▁death ▁of ▁Rh od ri ▁ab ▁Id wal ▁Fo el , ▁King ▁of ▁G w yn ed d ▁in ▁ 9 6 9 , ▁a ▁fact ▁which ▁could ▁indicate ▁that ▁the ▁Me ic ▁Ara ilt ▁pur pos ely ▁sought ▁to ▁capital ise ▁on ▁this ▁inf ight ing . ▁ ▁Among st ▁an ▁assembly ▁of ▁k ings ▁ ▁There ▁is ▁evidence ▁indicating ▁that ▁Mac cus ▁was ▁amongst ▁the ▁assemble d ▁k ings ▁who ▁are ▁recorded ▁to ▁have ▁met ▁with ▁Ed gar , ▁King ▁of ▁the ▁English ▁at ▁Ch ester ▁in ▁ 9 7 3 . ▁According ▁to ▁the ▁" D ", ▁" E ", ▁and ▁" F " ▁versions ▁of ▁the ▁Ang lo - S ax on ▁Chron icle , ▁after ▁having ▁been ▁consec r ated ▁king ▁that ▁year , ▁this ▁English ▁monarch ▁assemble d ▁a ▁massive ▁naval ▁force ▁and ▁met ▁with ▁six ▁k ings ▁at ▁Ch ester . ▁By ▁the ▁t enth ▁century , ▁the ▁number ▁of ▁k ings ▁who ▁met ▁with ▁him ▁was ▁alleg ed ▁to ▁have ▁been ▁eight , ▁as ▁ev iden ced ▁by ▁the ▁t enth - century ▁Life ▁of ▁St ▁S with un . ▁By ▁the ▁tw elf th ▁century , ▁the ▁eight ▁k ings ▁began ▁to ▁be ▁named ▁and ▁were ▁alleg ed ▁to ▁have ▁row ed ▁Ed gar ▁down ▁the ▁River ▁De e , ▁as ▁ev iden ced ▁by ▁sources ▁such ▁as ▁the ▁tw elf th - century ▁texts ▁Chron icon ▁ex ▁chron ic is , ▁G esta ▁reg um ▁Ang lor um ,