He was apparently so large that he could sit on the summit of Cadair Idris and survey his whole kingdom.
Idris was said to have studied the stars from on top of it and it was later reputed to bestow either madness or poetic inspiration on whoever spent a night on its summit.
[2] Another story has Idris seated in his chair plucking irritating grit from his shoe and throwing it down to the valley below, where it formed the three large boulders seen there till this day.
[3] The historical Idris is thought to have been killed during a battle with Oswald of Northumbria near the River Severn around 632, although the Welsh annals merely state he was strangled in the same year.
[4] He may have retired to the mountain as a hermit, but if that was the case, he must have re-entered secular life to do battle.