The Oxford Movement is said to have begun with John Keble’s Oxford sermon in 1833 on national apostasy (Melton xxiii), or abandonment of religious faith or principles. This event created the Oxford Movement as well as the Anglo-Catholic faction within the Church of England. This Anglo-Catholic faction is sometimes called the High Church faction, High Church meaning they favored incorporating Roman Catholic elements such as liturgy into Anglican worship.A motivating cause of the Oxford Movement was unhappiness with the secularization of the Church of England. This secularization meant converting from ecclesiastical (pertaining to the organized church), to lay use, or even drawing away from religious orientation.The Oxford Movement was also known as the Tractarian Movement, after a series of tracts, the leaders of the movement published, or as Puseyites, after one of their leaders. The Oxford Movements tracts were called Tracts for the Times (1833-1841).The main leaders of the Oxford Movement were Richard Hurrell Forde, John Keble, Henry Edward Manning, John Henry Newman, Edward Bouverie Pusey. Each of these leaders would have an influential role to play in the dissemination of the Oxford Movements teachings. Other leaders included Gerald Manley Hopkins, Sir William Palmer, Robert Wilberforce, and Isaac Williams.The aim of the Oxford Movement was to promote the High Church faction or Catholic aspects of Anglicism. One of its principal leaders was John Henry Newman, who is credited with writing the famous Tracts. Newman opposed the Gothic revival architecture, which he felt did not convey the importance of the sacraments. Newman was part of the Church of England at the time of the Oxford Movement, but converted to Catholicism at the end of the movement, in 1845.The Oxford Movements leaders argued that the one Catholic church had three branches (Anglicanism, Orthodoxy, and Roman Catholicism), which is known as Branch Theory. Their leaders attacked liberalism in theology. Newman decided that the Roman Catholic doctrines set down in the Council of Trent were equivalent to the Church of England’s Thirty-Nine Articles.