In the struggle of dynasties from which England suffered so severely during the fifteenth century, the drama of ambition shifted its scenes from London and York to Calais and Dublin. The appointment of Richard, Duke of York, as Lord Lieutenant, in 1449, presented him an opportunity of creating a Yorkist party among the nobles and people of "the Pale." This able and ambitious Prince possessed in his hereditary estate resources equal to great enterprises. He was in the first place the representative of the third son of Edward III.; on the death of his cousin the Earl of March, in 1424, he became heir to that property and title. He was Duke of York, Earl of March, and Earl of Rutland, in England; Earl of Ulster and Earl of Cork, Lord of Connaught, Clare, Meath, and Trim, in Ireland. He had been twice Regent of France, during the minority of Henry, where he upheld the cause of the Plantagenet King with signal ability. By the peace concluded at Tours, between England, France, and Burgundy, in 1444, he was enabled to return to England, where the King had lately come of age, and begun to exhibit the weak though amiable disposition which led to his ruin. The events of the succeeding two or three years were calculated to expose Henry to the odium of his subjects and the machinations of his enemies. Town after town and province after province were lost in France; the Regent Somerset returned to experience the full force of this unpopularity; the royal favourite, Suffolk, was banished, pursued, and murdered at sea; the King's uncles, Cardinal Beaufort and the Duke of Gloucester, were removed by death—so that every sign and circumstance of the time whispered encouragement to the ambitious Duke. When, therefore, the Irish lieutenancy was offered, in order to separate him from his partizans, he at first refused it; subsequently, however, he accepted, on conditions dictated by himself, calculated to leave him wholly his own master. These conditions, reduced to writing in the form of an Indenture between the King and the Duke, extended his lieutenancy to a period of ten years; allowed him, besides the entire revenue of Ireland, an annual subsidy from England; full power to let the King's land, to levy and maintain soldiers, to place or displace all officers, to appoint a Deputy, and to return to England at his pleasure. On these terms the ex-Regent of France undertook the government of the English settlement in Ireland.