Cunedagius and Marganus' conflict is mentioned twice in
Thomas Norton and
Thomas Sackville's play
Gorboduc (1561), as a warning against the possibility of civil strife: "Morgan slaine did yeld his conquered parte unto his cosins sworde in Camberland" (Act I, Scene II); "the cruell sworde bereft Morgan his life with cosyns hand" (Act III, Scene I). ==References==