The Viceroys were allowed a handsome income; therefore they were naturally anxious to keep their post. The first mention of salary is that granted to Geoffrey de Marisco. By letters-patent, dated at Westminster, July 4th, 1226, he was allowed an annual stipend of £580. This was a considerable sum for times when wheat was only 2s. a quarter, fat hogs 2s. each, and French wine 2s. a gallon.

Hugh O'Connor renewed hostilities in 1272, by destroying the English Castle of Roscommon. He died soon after, and his successor had but brief enjoyment of his dignity. In 1277 a horrible act of treachery took place, which the unfortunate Irish specially mention in their remonstrance to Pope John XXII., as a striking instance of the double-dealing of the English and the descendants of the Anglo-Normans then in Ireland, Thomas de Clare obtained a grant of Thomond from Edward I. It had already been secured to its rightful owners, the O'Briens, who probably paid, as was usual, an immense fine for liberty to keep their own property. The English Earl knew he could only obtain possession by treachery; he therefore leagued with Roe O'Brien, "so that they entered into gossipred with each other, and took vows by bells and relics to retain mutual friendship;" or, as the Annals of Clonmacnois have it, "they swore to each other all the oaths in Munster, as bells, relics of saints, and bachalls, to be true to each other for ever."

The unfortunate Irish prince little suspected all the false oaths his friend had taken, or all the villany he premeditated. There was another claimant for the crown as usual, Turlough O'Brien. He was defeated, but nevertheless the Earl turned to his side, got Brian Roe into his hands, and had him dragged to death between horses. The wretched perpetrator of this diabolical deed gained little by his crime,[[337]] for O'Brien's sons obtained a victory over him the following year. At one time he was so hard pressed as to be obliged to surrender at discretion, after living on horse-flesh for several days. In 1281 the unprincipled Earl tried the game of dissension, and set up Donough, the son of the man he had murdered, against Turlough, whom he had supported just before. But Donough was slain two years after, and Turlough continued master of Thomond until his death, in 1306. De Clare was slain by the O'Briens, in 1286.

In 1280 the Irish who lived near the Anglo-Norman settlers presented a petition to the English King, praying that they might be admitted to the privileges of the English law. Edward issued a writ to the then Lord Justice, D'Ufford, desiring him to assemble the lords spiritual and temporal of the "land of Ireland," to deliberate on the subject. But the writ was not attended to; and even if it had been, the lords "spiritual and temporal" appear to have decided long before that the Irish should not participate in the benefit of English laws, however much they might suffer from English oppression. A pagan nation pursued a more liberal policy, and found it eminently successful. The Roman Empire was held together for many centuries, quite as much by the fact of her having made all her dependencies to share in the benefits of her laws, as by the strong hand of her cohorts. She used her arms to conquer, and her laws to retain her conquests.

In 1281 a sanguinary engagement took place at Moyne, in the county Mayo, between the Cusacks and the Barretts. The latter were driven off the field. The Annals say: "There were assisting the Cusacks in this battle two of the Irish, namely, Taichleach O'Boyle and Taichleach O'Dowda, who surpassed all that were there in bravery and valour, and in agility and dexterity in shooting."[[338]] There was a battle this year also between the Cinel-Connaill and the Cinel-Owen, in which the former were defeated, and their chieftain, Oge O'Donnell, was slain. This encounter took place at Desertcreaght, in Tyrone.

Hugh Boy O'Neill was slain in 1283. He is styled "the head of the liberality and valour of the Irish; the most distinguished in the north for bestowing jewels and riches; the most formidable and victorious of his tribe; and the worthy heir to the throne of Ireland." The last sentence is observable, as it shows that the English monarch was not then considered King of Ireland. In 1285 Theobald Butler died at Berehaven. After his death a large army was collected by Lord Geoffrey Geneville, and some other English nobles. They marched into Offaly, where the Irish had just seized the Castle of Leix. Here they had a brief triumph, and seized upon a great prey of cows; but the native forces rallied immediately, and, with the aid of Carbry O'Melaghlin, routed the enemy completely. Theobald de Verdun lost both his men and his horses, and Gerald FitzMaurice was taken prisoner the day after the battle, it is said through the treachery of his own followers. The Four Masters do not mention this event, but it is recorded at length in the Annals of Clonmacnois. They add: "There was a great snow this year, which from Christmas to St. Brigid's day continued."

The two great families of De Burgo and Geraldine demand a special mention. The former, who were now represented by Richard de Burgo (the Red Earl), had become so powerful, that they took precedence even of the Lord Justice in official documents. In 1286 the Earl led a great army into Connaught, destroying the monasteries and churches, and "obtaining sway in everyplace through which he passed." This nobleman was the direct descendant of FitzAldelm de Burgo, who had married Isabella, a natural daughter of Richard Coeur de Lion, and widow of Llewellyn, Prince of Wales. Walter de Burgo became Earl of Ulster in right of his wife, Maud, daughter of the younger Hugh de Lacy. The Red Earl's grandson, William, who was murdered, in 1333, by the English of Ulster, and whose death was most cruelly revenged, was the third and last of the De Burgo Earls of Ulster. The Burkes of Connaught are descended from William, the younger brother of Walter, the first Earl.

John FitzThomas FitzGerald, Baron of Offaly, was the common ancestor of the two great branches of the Geraldines, whose history is an object of such peculiar interest to the Irish historian. One of his sons, John, was created Earl of Kildare; the other, Maurice, Earl of Desmond.