In the same year that Protestant Europe was thus assailed and terrified by the reviving spectre of religious persecution, Charles II of England died and his brother James II succeeded him. Charles may have been Catholic at heart, but in name at least he had retained the English religion. James was openly Catholic. A hasty rebellion raised against him by his nephew, Monmouth, fell to pieces;[1] and James, having executed Monmouth and approved a cruel persecution of his followers, began to take serious steps toward forcing the whole land back to the ancient faith. [Footnote 1: See _Monmouth's Rebellion_, page 172.] So here was kingly absolutism coming to the aid of the old religious intolerance. The English people, however, had already killed one king in defence of their liberties; and their resolute opposition to James began to suggest that they might kill another. Many of the leading nobles appealed secretly to William of Orange for help. William was, as we have said, the centre of opposition to Louis, and that began to mean to Catholicism as well. Also, William had married a daughter of King James and had thus some claim to interfere in the family domains. And, most important of all, as chief ruler of Holland, William had an army at command. With a portion of that army he set sail late in 1688 and landed in England. Englishmen of all ranks flocked to join him. King James fled to France, and a Parliament, hastily assembled in 1689, declared him no longer king and placed William and his wife Mary on the throne as joint rulers.[2] Thus William had two countries instead of one to aid him in his life-long effort against Louis. [Footnote 2: See _The English Revolution: Flight of James II_, page 200.] Louis, indeed, accepted the accession of his enemy as a threat of war and, taking up the cause of the fugitive James, despatched him with French troops to Ireland, where his Catholic faith made the mass of the people his devoted adherents. There were, however, Protestant Irish as well, and these defied James and held his troops at bay in the siege of Londonderry, while King William hurried over to Ireland with an army. Father-in-law and son-in-law met in the battle of the Boyne, and James was defeated in war as he had been in diplomacy. He fled back to France, leaving his Catholic adherents to withstand William as best they might. Limerick, the Catholic stronghold, was twice besieged and only yielded when full religious freedom had been guaranteed. Irishmen to this day call it with bitterness "the city of the violated treaty."[1] [Footnote 1: See _Siege of Londonderry and the Battle of the Boyne_, page 258.]