in 1784 and was appointed rector. Later in 1785, he created a revised Unitarian Book of Common Prayer based on Lindsey's work. Terminology Unitarianism is a proper noun and follows the same English usage as other Christian theologies that have developed within a religious group or denomination (such as Calvinism, Anabaptism, Adventism, Lutheranism, Wesleyanism, etc.). The term existed shortly before it became the name of a distinct religious tradition, thus occasionally it is used as a common noun to describe any understanding of Jesus Christ that denies the doctrine of the Trinity or affirms the belief that God is only one person. In that case, it would be a Nontrinitarian belief system not necessarily associated with the Unitarian movement. For example, the Unitarian movement has never accepted the Godhood of Jesus, and therefore does not include those nontrinitarian belief systems that do, such as Oneness Pentecostalism, United Pentecostal Church International, the True Jesus Church, and the writings of Michael Servetus (all of which maintain that Jesus is God as a single person). Recently, some religious groups have adopted the 19th-century term biblical unitarianism to distinguish their theologies from Unitarianism. The term Unitarian is sometimes applied today to those who belong to a Unitarian church but do not hold a Unitarian theological belief. In the past, most members of Unitarian churches were Unitarians also in theology. Over time, however, some Unitarians and Unitarian Universalists moved away from the traditional Christian roots of Unitarianism. For example, in the 1890s the American Unitarian Association began to allow non-Christian and non-theistic churches and individuals to be part of their fellowship. As a result, people who held no Unitarian belief began to be called Unitarians because they were members of churches that belonged to the American Unitarian Association. After several decades, the non-theistic members outnumbered the theological Unitarians. For a more specific discussion of Unitarianism as it evolved into a pluralistic liberal religious movement, see Unitarian Universalism (and its national groups the Unitarian Universalist Association in the United States, the Canadian Unitarian Council in Canada, the General Assembly of Unitarian and Free Christian Churches in the United Kingdom, and the International Council of Unitarians and Universalists). History Unitarianism, both as a theology and as a denominational family of churches, was defined and developed in Poland, Transylvania, England, Wales, India, Japan, Jamaica, the United States, and beyond in the 16th century through the present. Although common