Continuing Anglican movement in the context of "Memorial of the Holy Guardian Angels"

Anglicanism, also known as Episcopalianism in some countries, is a Western Christian tradition which developed from the practices, liturgy, and identity of the Church of England following the English Reformation, in the context of the Protestant Reformation in Europe. It is one of the largest branches of Christianity, with around 110 million adherents within the Anglican Communion, and more than 400,000 outside of the Anglican Communion, worldwide as of 2025.

Adherents of Anglicanism are called Anglicans; they are also called Episcopalians in some countries. Most are members of national or regional ecclesiastical provinces of the international Anglican Communion, one of the largest Christian bodies in the world, and the world's third-largest Christian communion. The provinces within the Anglican Communion have historically been in full communion with the See of Canterbury and thus with the archbishop of Canterbury, whom the communion refers to as its primus inter pares (Latin, 'first among equals'). The archbishop calls the decennial Lambeth Conference, chairs the meeting of primates, and is the president of the Anglican Consultative Council. Some churches that are not part of the Anglican Communion or recognised by it also call themselves Anglican, including those that are within the Continuing Anglican movement and Anglican realignment.

The Thirty-nine Articles of Religion (commonly abbreviated as the Thirty-nine Articles or the XXXIX Articles), finalised in 1571, are the historically defining statements of doctrines and practices of the Church of England with respect to the controversies of the English Reformation. The Thirty-nine Articles form part of the Book of Common Prayer used by the Church of England, and feature in parts of the worldwide Anglican Communion (including the Episcopal Church), as well as by denominations outside of the Anglican Communion that identify with the Anglican tradition (see Continuing Anglican movement).

When Henry VIII broke with the Catholic Church and was excommunicated, he began the reform of the Church of England, which would be headed by the monarch (himself), rather than the pope. At this point, he needed to determine what its doctrines and practices would be in relation to the Church of Rome and the new Protestant movements in continental Europe. A series of defining documents were written and replaced over a period of thirty years as the doctrinal and political situation changed from the excommunication of Henry VIII in 1533, to the excommunication of Elizabeth I in 1570. These positions began with the Ten Articles in 1536, and concluded with the finalisation of the Thirty-nine articles in 1571. The Thirty-nine articles ultimately served to define the doctrine of the Church of England as it related to Calvinist doctrine and Catholic practice.