What is "philadelphians"

The Philadelphians, or the Philadelphian Society, were a Protestant 17th century religious group in England. They were organized around John Pordage (1607–1681), an Anglican priest from Bradfield, Berkshire, who had been ejected from his parish in 1655 because of differing views, but then reinstated in 1660 during the English Restoration. Pordage was attracted to the ideas of Jakob Böhme, a Lutheran theosophist and Christian mystic.