Thus weakened and harassed by the intestine divisions which so fearfully increased in Ireland after the successful and splendid usurpation of the supreme monarchy by their ancestor Brian Boru, it should not be wondered at if the kings of Limerick had made but a feeble resistance to the enthusiastic and disciplined bravery of the Anglo-Norman adventurers, or that their city should have been easily won and as easily kept by these bold warriors; and yet it was not till after many towns of greater importance, if not strength, had been taken by them and securely held, that Limerick ceased to acknowledge its ancient lords as masters. Its king, Donnell O’Brien, was indeed one of the first of the Irish princes, who, forsaking the Irish monarch after the arrival of Strongbow, leagued himself with the English in support of Mac Murrogh, whose daughter, the half sister of the Earl’s wife, he had married; and as a reward for his defection, the king of Limerick claimed the assistance of Strongbow in attacking the king of Ossory. The result of this request is so honourable to the character of one of the Norman chiefs, and is so graphically sketched by Maurice Regan, the king of Leinster’s secretary, that we are tempted to relate it in his own words, as translated by Sir George Carew. “The Erle was no sooner come to the city (Waterford) but a messenger from O’Brien, kyng of Limerick, repaired unto him from his master, praying hym with all his forces to march into Ossery against Donald, that common enemie. The cause of friendship between the Erle and O’Brien was, that O’Brien had married one of the daughters of Dermond, kyng of Leinster, and half sister to the Erle’s wife. Unto the message the Erle made answeare, that he would satisfie O’Brien’s request, and they met at Ydough, and being joined, their forces were two thousand strong. Donald, fearinge the approach of his enemies, sent to the Erle to desire hym that he mought have a safe guard to come unto him, and then he doubted not but to gyve hym satisfaction. The request was graunted, and Maurice de Prindergast was sent for hym; but he, for the more securitie, obtained the words of the Erle and O’Brien, and the othes of all the chieftains of the army, that the kyng of Ossery shuld come and return in safetie; which done, he went to Donald, and within fewe hours he brought hym to the campe in the presence of all the army. The Erle and O’Brien chardged him with divers treasons and practices which he had attempted against his lord the kyng of Leinster, deceased; and O’Brien, and all the captens, disallowinge of his excuses, councelled the Erle to hang him, and O’Brien, without delay, commanded his men to harrasse and spoile Donald’s countrie, which willingly they performed. Maurice de Prindergast misliking these proceedings, and seeinge the danger the king of Ossery was in, presently mounted on his horse, commaunded his companie to do the like, and said, ‘My lords, what do you mean to do?’ and turning to