irvingite

from The Century Dictionary.

• noun A member of a religious denomination called after Edward Irving (1792–1834), a minister of the Church of Scotland, who was settled in London in 1822, promulgated mystical doctrines, and was excommunicated in 1833.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Eccl.) The common designation of a member of a sect founded by the Rev. Edward Irving (about 1830), who call themselves the Catholic Apostolic Church. They are highly ritualistic in worship, have an elaborate hierarchy of apostles, prophets, etc., and look for the speedy coming of Christ.