Anti-Catholicism in the United Kingdom nor was a Protestant heir any longer empowered to enter and enjoy the estate of his Catholic kinsman. However, the passing of this act was the occasion of the anti-Catholic Gordon Riots (1780) in which the violence of the mob was especially directed against Lord Mansfield who had balked at various prosecutions under the statutes now repealed. The anti-clerical excesses of the French Revolution and the consequent emigration to England of Catholic priests from France led to a softening of opinion towards Catholics on the part of the English Anglican establishment, resulting in the Roman Catholic Relief Act 1791 which
Catholic Church in England and Wales on his deathbed). Charles' brother and heir James, Duke of York (later James II) converted to Catholicism in 1668–1669. When Titus Oates in 1678 alleged a (totally imaginary) 'Popish Plot' to assassinate Charles and put James in his place, he unleashed a wave of Parliamentary and public hysteria which led to anti-Catholic purges, and another wave of sectarian persecution, which Charles was either unable or unwilling to prevent. Throughout the early 1680s the Whig element in Parliament attempted to remove James as successor to the throne. Their failure saw James become, in 1685, Britain's first openly Catholic monarch since Mary