R. R. Davies noted that certain internal features underscore the roots of Glyndŵr's political philosophy in Welsh mythology: in it, the three men invoke prophecy, and the boundaries of Wales are defined according to Merlinic literature.
R. R. Davies noterede sig, at visse interne dele understreger baggrunden for Glyndwrs politiske filosofi i walisisk mytologi: i den påberåber tre mænd sig en profeti, og Wales' grænser bliver fastlagt ud fra merlinsk litteratur.