 "Richard the Redeless" focuses wholly and exclusively on Richard II and the latter part of his reign, whereas "Mum" ignores Richard's rule to concentrate exclusively on problems during Henry IV's administration... "Richard the Redeless" contains specific allusions to events and personalities of Richard II's reign, but this is not the case with "Mum"... to be a truth teller and name names may have proved too much for him.He prefers more general, satirical attacks to explicit personalities or incidents...It seems best to hold open the possibility that there may be a connection between them, but there may not be.