Under the fanatical Philip II the county was a prey to plague as well as persecution, so that hatred against Spain became intense. Philip III, sensible of this, endeavoured to cajole the citizens of Perpignan by transferring to it the seat of the bishopric from Elne, and by ennobling several of the leading citizens, but succeeded in doing no more than in forming a small Spanish faction in the town. In 1610 all Catalonia was in revolt against Philip IV, and the county of Roussillon followed the example of Barcelona. The King of Spain sent troops to Perpignan and massacred the citizens. Those who survived the carnage appealed to Louis XIII, who sent an army into the county, and in 1642 the French, entering Perpignan, were hailed as deliverers. In 1659 the Treaty of the Pyrenees finally assured to France the possession of Roussillon and half of Cerdagne, and since then these have formed an integral portion of France. But before all this for a while Perpignan was the capital of the short-lived kingdom of Majorca. James I, King of Aragon, in 1229 had expelled the Moors from that island, and in 1238 from Valencia; and to the title King of Aragon he added those of King of Majorca and Valencia, Count of Barcelona and of Roussillon and Urgel, and Seigneur of Montpellier. To his eldest son Peter he left Aragon, and to the younger, James, he gave the rest. James I of Majorca was succeeded by his son Sanchez, who died without issue in 1324, and the next and last king was James II, son of Ferdinand, the brother of Sanchez. James married his cousin Constance, sister of Peter IV of Aragon. Peter was an ambitious man and insatiate in his greed. He resolved on the destruction of his cousin and brother-in-law, and the annexation of his dominions. James had made himself unpopular by his tyranny, and the islanders complained to the Aragonese king. This was precisely what Peter wanted; he summoned James to meet him in conference at Barcelona, arrested his sister Constance, and would have done the same by his brother-in-law had not James found means to escape. In the impotence of his resentment he declared war against Aragon, and thereby sealed his own fate. In 1343 Peter landed in Majorca, and was at once joined by the islanders. Then he turned his attention to Roussillon and overran it.