Catholic Church in the United Kingdom was not yet a reality, particularly in Ireland, where the Protestant Ascendancy was still in full force. The Treaty of Union of 1707, like the Act of Settlement, had stated that no "Papist" could succeed to the throne. Restrictions on the civil rights of Catholics only began to change with the passing of the Papists Act 1778, which allowed them to own property, inherit land and join the British Army, although even this measure resulted in the backlash of the Gordon Riots of 1780, showing the depth of continuing anti-Catholic feeling. After 1790, a new mood emerged as thousands of
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