It was noted that disasters of various kinds attended the expeditions of King Henry into Wales. The natives of the country attributed them to the magic powers of Owen Glendour, whom they believed able to control the elements, and who, when his men grew faint and weary, and he himself wished for a short respite from the toils of war, could pour upon the bands of Henry the fury of the northern storm. It was said that he could loose the secret springs of the wild cataract, and cause it to send forth such a flood of water, that the moors and valleys, through which the invader had to pass, would seem like an inland sea. Some believed that he could even summon the loud thunders from their secret cell, and cause the forked lightning to strike terror into the stoutest heart; that in one moment he could not only bring to his assistance a wild storm from off the hills, but that, when the beautiful glens and woods appeared in all their loveliness and repose, and every hill was lighted up with a glorious sunbeam, he could suddenly obscure them with the darkest shades of night. Thus men thought; they saw not, in the strange and terrible calamities which continually opposed the progress of King Henry, a continuation of events which had attended him since the death of Richard. Richard had been the friend and benefactor of Glendour; he had fought for him while living, and now that he was gone, he sought not only to revenge his death, but to preserve his native land from the usurpations of a foreign yoke. He performed, in consequence, such feats of valour, bore up beneath the pressure of such heavy trials, and devised such masterly schemes to circumvent the devices of the enemy, as his countrymen believed could neither be planned nor achieved by mortal mind or arm. They knew not the strength and the enthusiasm which injury and oppression will produce in either. Excited, therefore, to the highest pitch of feeling, Owen inspired his men with much of his own energy: aided by them, he foiled the power of the wary and martial Henry, and drove him ignominiously from the field. At the head of his choicest armies, the English king had often to retreat before a handful of men, whose chief had been unused to a military life; and though Glendour and his adherents were reduced at times to take shelter in caves and fastnesses, known only to themselves, they emerged again, and fell with terrible fury on the English, in moments, too, when they thought themselves most secure from their aggressions.